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| ::::::::::* '''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. | ::::::::::* '''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. | ::::::::::* '''"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. | ||
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| + | '''Default''' | ||
| + | :::'''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. | ||
Revision as of 09:48, 18 April 2011
| · eScan · MailScan · Technologies | · Technical Info · Security Awareness · User Guides |
Contents |
Anti-Spam
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. This page provides you with options for configuring the module. You can configure the following settings.
- Start/Stop: It enables you to enable or disable Anti Spam module. Click the appropriate option.
A. Advanced
- 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.
- This section provides you with options for configuring the general e mail options, spam filter configuration, and tagging e-mails in Anti Spam.
- User specified whitelist of words/phrases: (Color Code: GREEN ) 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.
- User specified List of Blocked words/phrases: (Color Code: RED) You should click this option to list the words or phrases that are defined in block list.
- User specified words/phrases disabled: (Color Code: GRAY) 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.
B. 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] You should select this check box, if you need Anti-Spam to check for fraudulent e-mails and quarantine them.
- 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.
- 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:
- 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.
- 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.
- "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
- 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.
