Exchange Spam Blocker
Exchange Spam Blocker
Exchange Spam Blocker Spam is a problem that is familiar to
anyone who uses the Internet. If you or your business rely on email, you
know exactly how big, time-consuming and expensive this problem can be.
The solution is to deal with spam before it gets to you - at the mail
server. If you're using MS Exchange and want to block spam,
exchange server spam filter!
SMTP Proxy is the software you're looking for. This Exchange spam
blocker stops spam in its tracks, enabling you to get on with business.
Incoming email is accepted by SMTP, at which point our spam blocker
scans all messages using
anti spam
filter. Spam is identified using a combination of techniques such as
analyzing the mail header, looking for spam keywords,
exchange anti
spam software filtering and more. The results are added up to form a
spam score, and if this score exceeds a certain limit the message is
labeled as spam. Once our Exchange spam blocker has identified the spam,
it is up to you to decide whether you want to delete or move it.
Blocking spam at the mail server level is a good idea for several
reasons. Spam mail can be deleted immediately, before it enters your
system. This saves you storage, bandwidth, time, and ultimately money.
Also, with this Exchange spam blocker, the sender can be notified if a
legitimate message was identified as spam.
.
For the latest information about
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block email exchange
Microsoft exchange server spam filter is SMTP Proxy is a server
based spam filter that protects any SMTP mail server software against
spam. Examples are IMail, Lotus Domino, MS Exchange, or Novell
Groupwise.
Note: If you need a desktop spam filter for POP3 email clients, please
see the workstation edition.
Exchange spam filtering
No Spam Today!'s flexible filter chain architecture makes it an
extensible multi-purpose SMTP Proxy, offering complete email security
and a lot of advanced options in today's mail processing:
The built-in attachment blocker allows you to specify a list of
attachments that you want to accept or block.
Built-in support for virus checkers such as Clam Anti Virus and F-Prot
Anti Virus to protect you against virus attacks.
The award-winning SpamAssassin™ spam filters out spam mails. The
built-in spam trap automatically keeps the spam filter up-to-date by
training a Bayes database with incoming spam mails.
A mail storage is included to archive incoming emails.
NoSpamToday!'s versatile filter chain architecture lets you easily
integrate additional third-party tools e.g. for email classification and
server-based email encryption.
Fight Spam with Award-Winning
spam blocker exchange!
No Spam Today! SMTP Proxy accepts incoming emails from the Internet by
SMTP and scans them, using spam blocking exchange to check incoming mail
messages. This engine uses the following techniques to identify spam:
The mail headers are scanned for some small inconsistencies that can
give away forgeries: A mail date in the past or in the future, forged
message IDs, and the like.
The mail body is scanned for typical spam mail content, such as spam
keywords, capitalized letters, or invitations to buy or click something.
Queries to blacklist servers are used, e.g. to see if a mail has been
submitted from a known open mail relay.
Probability analysis of mails (server spam filtering). Spam mails can be
trained, so that similar mails are more likely to be identified as spam
in the future.
Analysis of the URLs a mail refers to: Spammers want you to click on
hyperlinks referring to their sites, so a lookup in a database of known
spam-advertised sites has proven highly effective in identifying spam
mails.
The result of all these tests is added up to form a spam score. A
message is considered spam if the score exceeds a configurable
threshold. You can modify the aggressiveness of the spam checker by
modifying this threshold: an aggressive setting with a low threshold
will find more spam mails, at a higher risk of legitimate mails falsely
identified as spam (false positives).
In the typical configuration, the subject of mail identified as spam is
modified to flag it as spam mail, and the message is quarantined within
a
spam software for exchange wrapper, to prevent accidental
infection with dialers, spyware, trojans or viruses by viewing HTML
content. Now it is up to your mail server (or client) software to decide
what to do. You can delete spam mails, or move spam mails to a spam
folder, or leave the decision what to do with spam mails to your users.
Virus Filtering with No Spam Today!
NoSpamToday! has an integrated attachment blocker, and has built-in
support for many third-party virus checkers, such as Clam Anti Virus,
F-Prot Anti Virus, or McAfee VirusScan just to name a few.
Blocking malicious attachments
Most worms and viruses are spread by attachments. Getting rid of
messages containing potentially malicious attachments before even
starting virus checkers or spam filters can be very helpful to reduce
system load.
No Spam Today!'s built-in attachment blocker allows you to specify a
list of attachments that you want to accept, or, the other way round,
you can specify a list of attachments you do not want to accept. The
attachment filter is pre-configured to reject all attachment types known
as potential virus vectors.
The attachment blocker is also capable of detecting MIME violations.
MIME violations can disrupt mail server operation and sometimes crash
mail clients. Also, worm authors could try to hide executable
attachments with deliberate MIME syntax violations.
Virus Protection
No Spam Today! can be configured to run a third party virus checker
before a mail is accepted. Virus mails are rejected and deleted.
Every virus checker that offers a command line interface can be
integrated into No Spam Today!.
No Spam Today! supplies a configuration interface both simple to use and
highly versatile. You can easily adapt and test the operation of
third-party virus checkers.
For the latest information about
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Are you using an exchange 2000
spam blocker?
Spam blocker programs increase constructive business Internet
use by eliminating unwanted spam from your organization’s computer
system. Every company has its own definition of what quantifies a
message as spam. That’s why Zix Corporation (ZixCorp) developed a
customizable anti-spam solution, to meet your particular company’s
needs.
ZixCorp spam blocker programs not only control unwanted emails, they
offer an enhanced full text analysis engine and a full quarantine
management system. They also give you the ability to scan Social
Security and credit card numbers.
If you don’t use some sort of spam blocker you could expose your
organization to Internet dangers like viruses, large attachments that
hinder your system’s performance, proliferation of spam and offensive
materials, and disclosure of confidential or sensitive data.
The fast and efficient nature of email gives users the ability to reach
an incredibly big audience. ZixCorp’s Message Inspector allows companies
to enforce an Internet Usage Policy among its staff ensuring a safe and
productive and protected work place.
Eliminate the threat to your company's security and efficiency with
Message Inspector's multi-level management approach. Whether you pick
hosted or on-site services, ZixCorp’s Message Inspector can provide a
total filtering solution with customizable, flexible features that
ensure the best solution for your company.
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