Escan/english/escan11/eScan Management Console/Policies/Features Help/Anti-Spam

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Revision as of 07:17, 29 April 2021

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<a name="_Toc47530322"></a><a name="_Toc47530503">Anti-Spam</a>

Anti-Spam module filters junk and spam emails and sends content warnings to specified recipients. Here you can configure the following settings.

Advanced

This section provides you with options for configuring the general email options, spam filter configuration, and tagging emails in Anti-Spam.

Send Original Mail to User [Default]

This check box is selected by default. eScan delivers spam mail to your inbox with a spam tag. When an email is tagged as SPAM, it is moved to this folder. Select this check box, if you want to send original email tagged as spam to the recipient as well.

Do not check content of Replied or Forwarded Mails

Select this check box, if you want to ensure that eScan does not check the contents of emails that you have either replied or forwarded to other recipients.

Check Content of Outgoing mails

Select this check box, if you want Anti-Spam to check outgoing emails for restricted content.

Phrases

Click Phrases to open the Phrases dialog box. This dialog box lets you configure additional email related options. In addition, it lets you specify a list of words that the user can either allow or block.

User specified whitelist of words/phrases (Color Code: GREEN)

This option indicates the list of words or phrases that are present in the whitelist. A phrase added to the whitelist cannot be edited, enabled, or disabled.

User specified List of Blocked words/phrases: (Color Code: RED)

This option indicates the list of words or phrases that are defined in block list.

User specified words/phrases disabled: (Color Code: GRAY)

This option indicates the list of words or phrases that are defined to be excluded during scans. The options in the Phrases to Check dialog box are disabled by default.

Action List

Add Phrase: Option to add phrase to quarantine or delete the mail.
Edit Phrase: To modify existing phrase added in list.
Enable Phrase: By default, it is enabled. After being disabled, you can use this option to enable it.
Disable Phrase: Disable existing phrase added in list.
Whitelist: This will allow email to deliver to inbox when phrase is found in the email.
Block list: This will delete email when it contains the phrase.
Delete: Delete the phrase added in list.

Spam Filter Configuration

This section provides you with options for configuring the spam filter. All options in this section are selected by default.

Check for Mail Phishing [Default]

Select this option if you want Anti-Spam to check for fraudulent emails and quarantine them.

Treat Mails with Chinese/Korean character set as SPAM [Default]

When this option is selected, emails are scanned for Chinese or Korean characters. This check is based on the research data conducted by MicroWorld's various spam email samples collected from around the globe. From these samples, it was observed that spammers often use Chinese or Korean characters in their emails.

Treat Subject with more than 5 whitespaces as SPAM [Default]

In its research, MicroWorld found that spam emails usually contain more than five consecutive white spaces. When this option is selected, Anti-Spam checks the spacing between characters or words in the subject line of emails and treats emails with more than five whitespaces in their subject lines as spam emails.

Check content of HTML mails [Default]

Select this option if you want Anti-Spam to scan emails in HTML format along with text content.

Quarantine Advertisement mails [Default]

Select this option if you want Anti-Spam to check for advertisement types of emails and quarantine them.

Advanced

Clicking Advanced displays Advanced Spam Filtering Options dialog box. This dialog box lets you configure the following advanced options for controlling spam.

<img border=0 width=602 height=352 id="Picture 102" src="eScan_Corporate360_UserGuide_revised_files/image166.png">

Enable Non- Intrusive Learning Pattern (NILP) check [Default]

Non-Learning Intrusive Pattern (NILP) is MicroWorld's revolutionary technology that uses Bayesian Filtering and works on the principles of Artificial Intelligence (AI) to analyze each email and prevents spam and phishing emails from reaching your inbox. It has self-learning capabilities and it updates itself by using regular research feeds from MicroWorld servers. It uses an adaptive mechanism to analyze each email and categorize it as spam or ham based on the behavioral pattern of the user.

Enable email Header check [Default]

Select this option if you want to check the validity of certain generic fields likes From, To, and CC in an email and marks it as spam if any of the headers are invalid.

Enable X Spam Rules check [Default]

X Spam Rules are rules that describe certain characteristics of an email. It checks whether the words in the content of emails are present in eScan's database. This database contains a list of words and phrases, each of which is assigned a score or threshold. The Spam Rules Check technology matches X Spam Rules with the mail header, body, and attachments of each email to generate a score. If the score crosses a threshold value, the mail is considered as spam. Anti-Spam refers to this database to identify emails and takes action on them.

Enable Sender Policy Framework (SPF) check

SPF is a world standard framework adopted by eScan to prevent hackers from forging sender addresses. It acts as a powerful mechanism for controlling phishing mails. Select this check box if you want Anti-Spam to check the SPF record of the sender's domain. However, your computer should be connected to the Internet for this option to work.

Enable Spam URI Real-time Blacklist (SURBL) check

Select this option if you want Anti-Spam to check the URLs in the message body of an email. If the URL is listed in the SURBL site, the email will be blocked from being downloaded. However, your computer should be connected to the Internet for this option to work.

Enable Real-time Blackhole List (RBL) check

Select this option if you want Anti-Spam to check the sender's IP address in the RBL sites. If the sender IP address is blacklisted in the RBL site, the email will be blocked from being downloaded. However, your computer should be connected to the Internet for this option to work.

RBL Servers

RBL is a DNS server that lists IP addresses of known spam senders. If the IP of the sender is found in any of the blacklisted categories, the connection is terminated. The RBL Servers list contains addresses of servers and sites that maintain information regarding spammers. You can add or delete address in the list as per your requirement.

Auto Spam Whitelist

Unlike normal RBLs, SURBL scans emails for names or URLs of spam websites in the message body. It terminates the connection if the IP of the sender is found in any of the blacklisted categories. This contains a list of valid email addresses that can bypass the above Spam filtering options. It thus allows emails from the whitelist to be downloaded to the recipient's inbox. You can add or delete address in the list as per your requirement.

Mail Tagging Options

Anti-Spam also includes some mail tagging options, which are described as follows:

Do not change email at all

Select this option if you want to prevent Anti-Spam from adding the [Spam] tag to emails that have been identified as spam.

Both subject and body are changed: [Spam] tag is added in Subject: Actual spam content is embedded in Body

This option lets you identify spam emails. When you select this option, Anti-Spam adds a [Spam] tag in the subject line and the body of the email that has been identified as spam.

"X MailScan Spam: 1" header line is added: Actual spam content is embedded in Body

This option lets you add a [Spam] tag in the body of the email that has been identified as spam. In addition, it adds a line in the header line of the email.

Only [Spam] tag is added in Subject: Body is left unchanged [Default]

This option lets you add the [Spam] tag only in the subject of the email, which has been identified as spam.

"X MailScan Spam: 1" header line is added: Body and subject both remain unchanged

This option lets you add a header line to the email. However, it does not add any tag to the subject line or body of the email.

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 |style="text-align:right;"|&nbsp;&nbsp;'''·''' [[Technical Info|<font size=1.5 color="blue">Technical Info</font>]]&nbsp;&nbsp;'''·''' [[Escan/english/Security_Awareness|<font size=1.5 color="blue">Security Awareness</font>]]&nbsp;&nbsp;'''·''' [[User_Guides|<font size=1.5 color="blue">User Guides</font>]]
 |}
-<h2  id="mp-tfp-h2" style="margin:0; background:#C7E587; font-size:120%; font-weight:bold; border:10 solid #afa3bf; text-align:left; color:#000; padding:0.2em 0.4em">eScan Version 11  (and above) Online Help</h2>
+<h4 style='margin:0in'><a name="_Toc47530322"></a><a name="_Toc47530503">Anti-Spam</a></h4>
-{| class="wikitable" border="0"
-|-
-|width="1000pt"|
-|}
-<span class="plainlinks neverexpand"><div style="text-align: right;">[[Escan/english/escan11|Back]]</div></span><br/>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>Anti-Spam module
-__TOC__
+filters junk and spam emails and sends content warnings to specified
-<br>
+recipients. Here you can configure the following settings. </p>
-==<B><font size=5 color=#24B200>Anti-Spam</font></B>==
-<br><br>
-Anti-Spam is a part of eScan\’s Protection feature. This module filters all your junk and spam e mails by using the NILP technology and sends content warnings to specified recipients.
+<p class=MsoNormal align=center style='margin-top:12.0pt;margin-right:0in;
-This page provides you with options for configuring the module. You can configure the following settings.
+margin-bottom:12.0pt;margin-left:0in;text-align:center;line-height:110%'><img
-* '''Start/Stop:''' It enables you to enable or disable '''Anti Spam''' module. Click the appropriate option.
+border=0 width=500 height=446 id="Picture 101"
+src="eScan_Corporate360_UserGuide_revised_files/image165.png"></p>
-'''A.''' '''Advanced'''
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Advanced</b></p>
-:::This section provides you with options for configuring the general e mail options, spam filter configuration, and tagging e-mails in Anti Spam.
-:::::::* '''Send Original Mail to User: ''[Default]'' '''This check box is selected by default. eScan creates Spam folder within the e mail client. When an e mail is tagged as SPAM, it is moved to this folder. You should select this check box, if you need to send original e mail that is tagged as spam to the recipient as well.
-:::::::* '''Do not check content of Replied or Forwarded Mails: '''You can select this check box, if you need to ensure that eScan does not check the contents of e mails that you have either replied or forwarded to other recipients.
-:::::::* '''Check Content of Outgoing mails: '''You can select this check box, if you need Anti-Spam to check outgoing e mails for restricted content.
-:::::::::::* '''Phrases: '''You can click the '''Phrases''' button to open the '''Phrases''' dialog box. This dialog box helps you configure additional e mail-related options. In addition, it allows you to specify a list of words that the user can either allow or block. This list is called the '''user specified whitelist'''. You can specify certain words or phrases so that mails containing those words or phrases in the subject, header, or body are recognized as spam and are quarantined or deleted. All the fields are available only when you select the '''Enable E-mail Content Scanning''' check box. The dialog box uses the following color codes to categorize e-mails.
-::::::::::::::::* '''User specified whitelist of words/phrases:''' (Color Code: <font color=green> '''GREEN''' </font>) You should click this option to list the words or phrases that are present in the whitelist. A phrase that is added to the whitelist cannot be edited, enabled, or disabled.
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>This section
-::::::::::::::::* '''User specified List of Blocked words/phrases:''' (Color Code: <font color=red>'''RED'''</font>) You should click this option to list the words or phrases that are defined in block list.
+provides you with options for configuring the general email options, spam
-::::::::::::::::* '''User specified words/phrases disabled: '''(Color Code: <font color=gray>'''GRAY'''</font>) You should click this option to list the words or phrases that are defined excluded during scans. The options in the '''Phrases to Check''' dialog box are disabled by default.
+filter configuration, and tagging emails in Anti-Spam.</p>
-'''B.''' '''Spam Filter Configuration: '''This section provides you with options for configuring the spam filter.''' '''All options in this section are selected by default.
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>&nbsp;</p>
-:::::::::* '''Check for Mail Phishing: ''[Default]'' '''You should select this check box, if you need Anti-Spam to check for fraudulent e-mails and quarantine them.
+<p class=MsoNormal style='margin-bottom:0in;margin-bottom:0in;margin-top:0in;
-:::::::::* '''Treat Mails with Chinese /Korean character set as SPAM: ''[Default]'' '''When this''' '''check box is selected, eScan scans e mails with Chinese or Korean characters. This check is based on the research data conducted by MicroWorld’s various spam e mail samples collected from around the globe. From these samples, it was observed that spammers often use Chinese or Korean characters in their e mails.
+line-height:110%'><b>Send Original Mail to User </b><b>[Default]</b></p>
-:::::::::* '''Treat Subject with more than 5 whitespaces as SPAM: ''[Default]'' '''In its research, MicroWorld found that spam e-mails usually contain more than five consecutive white spaces. When this check box is selected, Anti Spam checks the spacing between characters or words in the subject line of e mails and treats e mails with more than five whitespaces in their subject lines as spam e mails.
-:::::::::* '''Check content of HTML mails: ''[Default]'' '''You should select this check box when you need Anti-Spam to scan e-mails in HTML format along with textual content.
-:::::::::* '''Quarantine Advertisement mails: ''[Default]'' '''You should select this check box when you need Anti-Spam to check for advertisement types of e-mails and quarantine them.
-::::::::::::* '''Advanced: '''Click this button to open the '''Advanced Spam Filtering Options''' dialog box. This dialog box helps you configure the following advanced options for controlling spam.
-:::::::::::::::* '''Enable Non Intrusive Learning Pattern (NILP) check: [Default] '''NILP is MicroWorld’s revolutionary technology that uses Bayesian Filtering and works on the principles of Artificial Intelligence (AI) to analyze each e mail and prevents spam and phishing e mails from reaching your inbox. It has self-learning capabilities and it updates itself by using regular research feeds from MicroWorld servers. It uses an adaptive mechanism to analyze each e mail and categorize it as spam or ham based on the behavioral pattern of the user. You should select this check box if you need to enable NILP check.
-:::::::::::::::* '''Enable eMail Header check: ''[Default]'' '''You should select this check box if you need to check the validity of certain generic fields like From, To, and CC in an e mail and marks it as spam if any of the headers are invalid.
-:::::::::::::::* '''Enable X Spam Rules check: ''[Default]'' '''X Spam Rules are rules that describe certain characteristics of an e mail. It checks whether the words in the content of e mails are present in eScan’s database. This database contains a list of words and phrases, each of which is assigned a score or threshold. The''' '''X Spam Rules Check technology matches X Spam Rules with the mail header, body, and attachments of each e mail to generate a score. If the score crosses a threshold value, the mail is considered as spam.''' '''Anti Spam refers to this database to identify e mails and takes action on them.''' '''
-:::::::::::::::* '''Enable Sender Policy Framework (SPF) check: '''SPF is a world standard framework that is adopted by eScan to prevent hackers from forging sender addresses. It acts a powerful mechanism for controlling phishing mails. You should select this check box if you need Anti-Spam to check the SPF record of the sender’s domain. However, your computer should be connected to the Internet for this option to work.
-:::::::::::::::* '''Enable Spam URI Realtime Blacklist (SURBL) check: '''You should select this option if you need Anti-Spam to check the URLs in the message body of an e-mail. If the URL is listed in the SURBL site, the e-mail will be blocked from being downloaded. However, your computer should be connected to the Internet for this option to work.
-:::::::::::::::* '''Enable Realtime Blackhole List (RBL) check: '''You should select this option if you need Anti-Spam to check the sender’s IP address in the RBL sites. If the sender IP address is blacklisted in the RBL site, the e-mail will be blocked from being downloaded. However, your computer should be connected to the Internet for this option to work.
-:::::::::::::::* '''RBL Servers: '''RBL is a DNS server that lists IP addresses of known spam senders. If the IP of the sender is found in any of the blacklisted categories, the connection is terminated. The RBL Servers list contains addresses of servers and sites that maintain information regarding spammers. You can add or delete address in the list as per your requirement.
-:::::::::::::::* '''Auto Spam Whitelist: '''Unlike normal RBLs, SURBL scans e mails for names or URLs of spam Web sites in the message body. It terminates the connection if the IP of the sender is found in any of the blacklisted categories. This contains a list of valid e-mail addresses that can bypass the above Spam filtering options. It thus allows e-mails from the whitelist to be downloaded to the recipient’s inbox. You can add or delete address in the list as per your requirement.
-'''C.''' '''Mail Tagging Options: '''Anti Spam also includes some mail tagging options, which are described as follows:
+<p class=MsoNormal style='margin-bottom:0in;margin-bottom:0in;margin-top:0in;
+line-height:110%'>This check box is selected by default. eScan delivers spam
+mail to your inbox with a spam tag. When an email is tagged as SPAM, it is
+moved to this folder. Select this check box, if you want to send original email
+tagged as spam to the recipient as well.</p>
-::::::::::* '''Do not change email at all: '''You should select this option when you need to prevent Anti Spam from adding the ''[Spam]'' tag to e mails that have been identified as spam.
+<p class=MsoNormal style='margin-bottom:0in;margin-bottom:0in;margin-top:0in;
-::::::::::* '''Both subject and body is changed: ''[Spam]'' tag is added in Subject: Actual spam content is embedded in Body: '''This option helps you identify spam e mails. When you select this option, Anti Spam''' '''adds a ''[Spam]'' tag in the subject line and the body of the e mail that has been identified as spam.
+line-height:110%'>&nbsp;</p>
-::::::::::* '''"X MailScan Spam: 1" header line is added: Actual spam content is embedded in Body: '''This option helps you add a [Spam] tag in the body of the e mail that has been identified as spam. In addition, it adds a line in the header line of the e mail.
-::::::::::* '''Only ''[Spam]'' tag is added in Subject: Body is left unchanged:'' [Default]'' '''This option helps you add the ''[Spam]'' tag only in the subject of the e mail, which has been identified as spam.
-::::::::::* '''"X MailScan Spam: 1" header line is added: Body and subject both remain unchanged: '''This option helps you add a header line to the e mail. However, it does not add any tag to the subject line or body of the e mail.
-'''Default'''
+<p class=MsoNormal style='margin-bottom:0in;margin-bottom:0in;margin-top:0in;
-:::'''Note:-''' Click the Default button, if you want to apply default settings, which are done during installation of eScan. It loads and resets the values to the default settings.
+line-height:110%'><b>Do not check content of Replied or Forwarded Mails</b></p>
+<p class=MsoNormal style='margin-bottom:0in;margin-bottom:0in;margin-top:0in;
+line-height:110%'>Select this check box, if you want to ensure that eScan does
+not check the contents of emails that you have either replied or forwarded to
+other recipients.</p>
+<p class=MsoNormal style='margin-bottom:0in;margin-bottom:0in;margin-top:0in;
+line-height:110%'>&nbsp;</p>
+<p class=MsoNormal style='margin-bottom:0in;margin-bottom:0in;margin-top:0in;
+line-height:110%'><b>Check Content of Outgoing mails</b></p>
+<p class=MsoNormal style='margin-bottom:0in;margin-bottom:0in;margin-top:0in;
+line-height:110%'>Select this check box, if you want Anti-Spam to check
+outgoing emails for restricted content.</p>
+<p class=MsoNormal style='margin-bottom:0in;margin-bottom:0in;margin-top:0in;
+line-height:110%'>&nbsp;</p>
+<b><span style='font-size:11.0pt;line-height:110%;font-family:"Open Sans",sans-serif'><br
+clear=all style='page-break-before:always'>
+</span></b>
+<p class=MsoNormal style='margin-bottom:0in;margin-bottom:0in;margin-top:0in;
+line-height:110%'><b>Phrases</b></p>
+<p class=MsoNormal style='margin-bottom:0in;margin-bottom:0in;margin-top:0in;
+line-height:110%'>Click <b>Phrases</b> to open the <b>Phrases</b> dialog box.
+This dialog box lets you configure additional email related options. In
+addition, it lets you specify a list of words that the user can either allow or
+block.</p>
+<p class=MsoNormal style='margin-bottom:0in;margin-bottom:0in;margin-top:0in;
+line-height:110%'>&nbsp;</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>User specified
+whitelist of words/phrases</b> (Color Code: <b>GREEN</b>)</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>This option
+indicates the list of words or phrases that are present in the whitelist. A
+phrase added to the whitelist cannot be edited, enabled, or disabled.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>&nbsp;</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>User specified
+List of Blocked words/phrases:</b> (Color Code: <b>RED</b>)</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>This option
+indicates the list of words or phrases that are defined in block list.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'> </p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>User specified
+words/phrases disabled: </b>(Color Code: <b>GRAY</b>)</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>This option
+indicates the list of words or phrases that are defined to be excluded during
+scans. The options in the <b>Phrases to Check</b> dialog box are disabled by
+default.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'> </p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Action List</b></p>
+<ul style='margin-top:0in' type=disc>
+ <li class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Add Phrase: </b>Option
+     to add phrase to quarantine or delete the mail.</li>
+ <li class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Edit Phrase:</b>
+     To modify existing phrase added in list.</li>
+ <li class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Enable
+     Phrase:</b> By default, it is enabled. After being disabled, you can use
+     this option to enable it.</li>
+ <li class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Disable
+     Phrase:</b> Disable existing phrase added in list.</li>
+ <li class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Whitelist:</b>
+     This will allow email to deliver to inbox when phrase is found in the
+     email.</li>
+ <li class=MsoNormal style='margin-bottom:0in;margin-bottom:0in;margin-top:
+in;line-height:110%'><b>Block list:</b> This will delete email when it
+     contains the phrase.</li>
+ <li class=MsoNormal style='margin-bottom:0in;margin-bottom:0in;margin-top:
+in;line-height:110%'><b>Delete:</b> Delete the phrase added in list.</li>
+</ul>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Spam Filter
+Configuration</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>This section
+provides you with options for configuring the spam filter. All options in this
+section are selected by default.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Check for Mail
+Phishing </b><b>[Default]</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>Select this
+option if you want Anti-Spam to check for fraudulent emails and quarantine
+them.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Treat Mails
+with Chinese/Korean character set as SPAM </b><b>[Default]</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>When this option
+is selected, emails are scanned for Chinese or Korean characters. This check is
+based on the research data conducted by MicroWorld's various spam email samples
+collected from around the globe. From these samples, it was observed that
+spammers often use Chinese or Korean characters in their emails.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>&nbsp;</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Treat Subject
+with more than 5 whitespaces as SPAM </b><b>[Default]</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>In its research,
+MicroWorld found that spam emails usually contain more than five consecutive
+white spaces. When this option is selected, Anti-Spam checks the spacing
+between characters or words in the subject line of emails and treats emails
+with more than five whitespaces in their subject lines as spam emails.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Check content
+of HTML mails </b><b>[Default]</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>Select this
+option if you want Anti-Spam to scan emails in HTML format along with text content.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>&nbsp;</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Quarantine
+Advertisement mails </b><b>[Default]</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>Select this
+option if you want Anti-Spam to check for advertisement types of emails and
+quarantine them.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<h5 style='margin:0in'>Advanced</h5>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>Clicking <b>Advanced</b>
+displays Advanced Spam Filtering Options dialog box. This dialog box lets you
+configure the following advanced options for controlling spam.</p>
+<p class=MsoNormal style='margin-top:12.0pt;margin-right:0in;margin-bottom:
+.0pt;margin-left:0in;line-height:110%'><b><img border=0 width=602 height=352
+id="Picture 102" src="eScan_Corporate360_UserGuide_revised_files/image166.png"></b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Enable Non-
+Intrusive Learning Pattern (NILP) check [Default]</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>Non-Learning
+Intrusive Pattern (NILP) is MicroWorld's revolutionary technology that uses
+Bayesian Filtering and works on the principles of Artificial Intelligence (AI)
+to analyze each email and prevents spam and phishing emails from reaching your
+inbox. It has self-learning capabilities and it updates itself by using regular
+research feeds from MicroWorld servers. It uses an adaptive mechanism to
+analyze each email and categorize it as spam or ham based on the behavioral
+pattern of the user.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Enable email
+Header check [Default]</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>Select this
+option if you want to check the validity of certain generic fields likes From,
+To, and CC in an email and marks it as spam if any of the headers are invalid.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<b><span style='font-size:11.0pt;line-height:110%;font-family:"Open Sans",sans-serif'><br
+clear=all style='page-break-before:always'>
+</span></b>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Enable X Spam
+Rules check [Default]</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>X Spam Rules are
+rules that describe certain characteristics of an email. It checks whether the
+words in the content of emails are present in eScan's database. This database
+contains a list of words and phrases, each of which is assigned a score or
+threshold. The Spam Rules Check technology matches X Spam Rules with the mail
+header, body, and attachments of each email to generate a score. If the score crosses
+a threshold value, the mail is considered as spam. Anti-Spam refers to this
+database to identify emails and takes action on them.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Enable Sender
+Policy Framework (SPF) check</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>SPF is a world
+standard framework adopted by eScan to prevent hackers from forging sender
+addresses. It acts as a powerful mechanism for controlling phishing mails.
+Select this check box if you want Anti-Spam to check the SPF record of the
+sender's domain. However, your computer should be connected to the Internet for
+this option to work.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Enable Spam
+URI Real-time Blacklist (SURBL) check</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>Select this
+option if you want Anti-Spam to check the URLs in the message body of an email.
+If the URL is listed in the SURBL site, the email will be blocked from being
+downloaded. However, your computer should be connected to the Internet for this
+option to work.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Enable
+Real-time Blackhole List (RBL) check</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>Select this
+option if you want Anti-Spam to check the sender's IP address in the RBL sites.
+If the sender IP address is blacklisted in the RBL site, the email will be
+blocked from being downloaded. However, your computer should be connected to
+the Internet for this option to work.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>RBL Servers</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>RBL is a DNS
+server that lists IP addresses of known spam senders. If the IP of the sender
+is found in any of the blacklisted categories, the connection is terminated.
+The RBL Servers list contains addresses of servers and sites that maintain
+information regarding spammers. You can add or delete address in the list as
+per your requirement.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Auto Spam
+Whitelist</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>Unlike normal
+RBLs, SURBL scans emails for names or URLs of spam websites in the message
+body. It terminates the connection if the IP of the sender is found in any of
+the blacklisted categories. This contains a list of valid email addresses that
+can bypass the above Spam filtering options. It thus allows emails from the
+whitelist to be downloaded to the recipient's inbox. You can add or delete
+address in the list as per your requirement.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Mail Tagging
+Options</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>Anti-Spam also
+includes some mail tagging options, which are described as follows:</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<b><span style='font-size:11.0pt;line-height:110%;font-family:"Open Sans",sans-serif'><br
+clear=all style='page-break-before:always'>
+</span></b>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Do not change
+email at all</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>Select this
+option if you want to prevent Anti-Spam from adding the [Spam] tag to emails
+that have been identified as spam.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Both subject
+and body are changed: [Spam] tag is added in Subject: Actual spam content is
+embedded in Body</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>This option lets
+you identify spam emails. When you select this option, Anti-Spam adds a [Spam]
+tag in the subject line and the body of the email that has been identified as
+spam.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&quot;X
+MailScan Spam: 1&quot; header line is added: Actual spam content is embedded in
+Body</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>This option lets
+you add a [Spam] tag in the body of the email that has been identified as spam.
+In addition, it adds a line in the header line of the email.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>Only </b><b>[Spam]</b><b>
+tag is added in Subject: Body is left unchanged<i> </i></b><b>[Default]</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>This option lets
+you add the [Spam] tag only in the subject of the email, which has been
+identified as spam.</p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&nbsp;</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'><b>&quot;X
+MailScan Spam: 1&quot; header line is added: Body and subject both remain
+unchanged</b></p>
+<p class=MsoNormal style='margin-bottom:0in;line-height:110%'>This option lets
+you add a header line to the email. However, it does not add any tag to the subject
+line or body of the email.</p>