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General

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Support

MailScan for Linux Mail Servers


Contents

Required Packages

RPM Package Name                       File name
    mwadmin                 mwadmin-x.x-x.<linux flavor><release>.i386.rpm
    mwav                    mwav-x.x-x.<linux flavor><release>.i386.rpm
    mailscan                mailscan-x.x-x.<linux flavor><release>.i386.rpm


Debian Package Name                    File name
    mwadmin                 mwadmin-x.x-x.<linux flavor><release>.i386.deb
    mwav                    mwav-x.x-x.<linux flavor><release>.i386.deb
    mailscan                mailscan-x.x-x.<linux flavor><release>.i386.deb




Installation

NOTE:The packages should be installed as per the order given below. Installation should be done using a Terminal to run the command line parameters


Command Line Installation:


For RPM Packages:

# rpm -ivh mwadmin-x.x-x.<linux flavor><release>.i386.rpm
# rpm -ivh mwav-x.x-x.<linux flavor><release>.i386.rpm
# rpm -ivh mailscan-x.x-x.<linux flavor><release>.i386.rpm


For Debian packages:

# dpkg -i mwadmin-x.x-x.<linux flavor><release>.i386.deb
# dpkg -i mwav-x.x-x.<linux flavor><release>.i386.deb
# dpkg -i mailscan-x.x-x.<linux flavor><release>.i386.deb


Note:- Mailscan for Linux by default uses SMTP port 25. In case, if the mailserver is on the same system then the mailserver smtp port should use a different port other than port 25.



FAQ's

General

1. What is MailScan for Linux Mail Servers?

A. MicroWorld's MailScan for Linux is a reliable and 'Real-Time" mail-scanning software for Linux Mail Servers. It offers a complete and secure security solution for mail servers running on Linux. Some of the Linux mail servers that it protects are: SendMail, Qmail, Exim, PostFix, etc.


2. What are the features in MailScan for Linux Mail Servers?

A. MailScan for Linux Mail Servers:

  • Anti-Virus Scanner,
  • Content (Spam) Scanning,
  • Attachment Reservation and Malicious Attachment detection,
  • Easy and convenient web-based administration
  • Automatic download of Virus signatures,
  • Provides extensive Logs for analysis.

3. For which flavors of GNU/Linux is MailScan for Linux Mailserver available?

A. MailScan for Linux MailServer is available for

  • RHEL 5 (32 Bit)
  • RHEL 5 (64 Bit)
  • SLES 10.2 (32 Bit)
  • SLES 10.2 (64 Bit)


New or updated packages for various flavors of GNU/Linux are always added in the official web-site www.escanav.com as well as in the eScan Wiki site. Click here to check the available Packages for download

If you do not find your package in our website, please write to linux@escanav.com with your following details as mentioned below:

  • MailScan product name,
  • linux flavor and release version,
  • the linux kernel version and
  • 32 bit or 64 bit OS.

4. What is the difference between the Evaluation version of MailScan software and fully licensed software?

A. The evaluation version and licensed version of MailScan are identical in feature and functionality wise. While in evaluation version of MailScan, it will function for a limited period i.e. for 30-days after which the license key for MailScan has to be purchased.


5. How can I check the dependencies required for MicroWorld's products?

A. To check the dependencies before installing the packages

command for RPM Package
# rpm -qpR <package>
command for Debian Package
# dpkg --info <package>



6. How can I check the version of the MailScan packages installed?

A. To check the version of the installed MailScan packages


command for RPM Package
# rpm -qi <package-name> Display package information, including name, version, and description.
OR
* rpm -qa <package-name> Report status of specified package.
Example: rpm -qa mwadmin rpm -qa mwav rpm -qa mailscan
OR
Example: rpm -qi mwadmin rpm -qi mwav rpm -qi mailscan


command for Debian Package
# dpkg -l <package-name> List packages matching given pattern
OR
# dpkg -s <package-name> Report status of specified package.
Example: dpkg -l mwadmin dpkg -l mwav dpkg -l mailscan
OR
Example: dpkg -s mwadmin dpkg -s mwav dpkg -s mailscan



7. How does MailScan for Linux Mail server work?

A. MailScan will scan all incoming and outgoing mails on a real time basis for viruses and other malwares, offensive contents and malicious attachments. MailScan uses content scanning for detection of SPAM mails. It will restrict emails with certain words or phrases that are not useful to an organization.

Thus MailScan will scan for Viruses and content scanning and deliver the mail to the Mail Server.



Features

1. What is Greylisting?

A. Grey Listing is one of the features used by MailScan to control spam emails. Grey Listing method, when enabled, temporarily rejects a mail when it is received for the first time or from an unknown sender. A genuine mail-server will always retry to re-send the mail while a spammer generally will not re-send those mails which fails to reach the recipient.

Greylisting checks for 3 basic informations to identify a mail, which is called as "TRIPLET":

  1. The ip address of the sender domain,
  2. The email address of the sender and
  3. The email address of the recipient

If the triplet is seen for the first time (i.e. the mail is sent to the recipient domain for the first time), then the mail is temporarily rejected. A temporary failure message is sent to the sender SMTP server as below:

 451 4.7.1 Please try again later

If the triplet has been seen and accepted by the recipient domain before, then the mail is accepted and delivered.



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