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MailScan for Linux is a reliable web based 'Real-Time'
mail scanning Software for Linux Mail Servers and
performs Spam filtering and virus scanning. 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.
With the increased penetration of Linux as an alternate
operating system for mail servers, attacks on Linux
based mail servers has increased. About 90% of
the viruses today enter the organizations via Internet
emails. The only solution is to provide content
security or, in a broader sense, security plug-ins,
at the gateway level and most importantly, everything
has to be on a "Real-Time" basis. MailScan
for Linux is delivers all these functions. It provides
a comprehensive virus, harmful-carrier and content
security. It stops these threats before they arrive
on to the company's network. MailScan for Linux
acts as a Content-Security and Anti-Virus Software
for your Corporate Mail Server. It scans and cleans
e-mails that:
A. Flow between all the local
users.
B. Are sent from your Mail Server
to the Internet
C. Come into your Mail Server
from the Internet (either via SMTP).
- All the mails pass through MailScan that
ensures security and delivery of messages.
- MailScan works on "TCP-IP Port level" and
hence does not require an additional machine
to act like a gateway. MailScan for Linux is
based highly optimized open source and in-house
developed software's.
- MailScan for Linux being a gateway, all the
mails pass through MailScan where the following
functions are performed:
- Scanning all the e-mails for viruses
before letting them through the gateway.
- SPAM control by checking the validity
of the mail senders and their IP-Addresses
(available in MailScan for Linux).
- MailScan for Linux performs virus and content
scanning at the gateway and then delivers the
mail to the user mailboxes.
MailScan for Linux Features
White Lists
MailScan for Linux allows you to create
a White List of clean domains and users. In addition
there is a list of ‘Spam phrases’. Mails
with such phrases should be blocked. The software
allows you to apply a severity level to the phrases
from low to high. This allows you to control how
Spam is identified.
Figure 1 shows a screen from MailScan for Linux,
the top selling Anti Virus and Anti Spam software
with features of White Lists and Spam Phrases.
Figure 1. White Lists and Spam Phrases
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RBL and DUL Controls
MailScan for Linux should have a list of
RBL and DUL to verify a users authenticity.
MAPS (Mail Abuse Prevention System) provides a
list of IP addresses that are known Spammers or
allow spamming. This list is called as Black hole
list. When your server, receives a mail from a
domain, not on its allow domain list, you can send
a query to MAPS Server which verifies the IP.
Spammers sometimes use stealth mail tactics when
their initial Spam attempts are blocked. They use
a Dial-Up-Service (DUL) provider
to connect their Spam mail service, to the server.
This is trespassing on your MailServer and the
MAPS DUL project helps in identifying and stopping
Spam. The project has a list of DUL users who are
known Spammers. To verify if the request for connection
to your Server is genuine, you can send a query
to dialups.mail-abuse.org. The request is verified
and returned.
Figure 2 shows a screen from MailScan for Linux,
the top selling Anti-Virus and Spam software for
Linux mail servers with features of RBL and DUL.
Figure 2. RBL and DUL features
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Block Spammer with black listing
Another way to beat a Spam is to refuse
entry to e-mail IDs and Domains that are known Spammers.
MailScan for Linux allows you to create a Black List
of such users and domains. Software with the following
features effectively combats Spam.
- Add e-mail ID of known Spammer to the block
list. Any mails received from an ID, included
in the list are automatically deleted, without
being downloaded into your server.
- Add domains of known Spammers to the black
list. Any mails received from such domains are
automatically blocked, without being downloaded
into your server.
Figure 3 shows a screen with from MailScan for Linux,
the top selling Anti Virus and Anti Spam software,
with features to create Black lists.
Figure 3 Black List of Users and Domains |
Virus Definition Update
Every day sees new viruses appearing. Updates
are vaccines that detect and remove new viruses.
The software must have the means to identify new
viruses and remove them. Updates are available as
free down loads on our mirror download. MailScan
for Linux can be configured to connect automatically
and download updates from updates download sites.
You can also set a daily schedule to automatically
download updates at a set time.
Figure 4 shows a screen with from MailScan for
Linux, the top selling Anti Virus and Anti Spam
software, with features to automatically download
updates.
Block Specific Attachment Types
Some types of attachments are used as virus
carrier files. MailScan for Linux allows you to specify
such attachment types and these are automatically
blocked. This feature can also be used to stop confidential
data being mailed as attachments.
Another feature is a white list of users and domains
to whom mails can be sent without scanning. This
feature removes double scanning and increases mail
delivery speed.
Figure 5 shows a screen with from MailScan for
Linux, the top selling Anti Virus and Anti Spam
software, with features to automatically download
updates.
In addition MailScan for Linux has the
following features:
- Creating and sending custom alerts when virus
or Spam is detected in mails to the mail sender,
receiver and admin.
- Move Spam and virus infected mails to a directory
or mailbox.
- Start anti virus/Spam and mail service directly
from the application without quitting or reboot.
- Allow administrators to import files with details
of users, virtual users and access files.
- Archive all mails in a directory or mailbox.
- Provide detailed logs of mail service, Spam
and anti virus and an Interface log.
- Delete Spam, infected and undeliverable mails
After a mail is identified as Spam or infected it
is important that such mails be deleted. Mails that
are undeliverable due to unresolved addresses should
also be deleted. MailScan for Linux allows you to
view brief details of such mails and delete them.
Following figure shows a screen from MailScan for
Linux with features to delete Spam and infected mails.
MailScan
for Linux also has
- Anti
Virus Scanner
- Content
(Spam) Scanning
- Virus
Scanning
- Scan
Control
- Attachment
Reservation
- Customized
Alert Messages
- Malicious
Attachments Detection
- MailScan
works like a Service
- Heuristics
Scanning
- Easy
and convenient Administration
- Get
Up-to-date names of Viruses via e-mail
- Extensive
Logs
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