| General Features |
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| XWall handles all domains on your Exchange
server. |
After one of the XWall filters catches a
message, you can choose from a list of different actions.
Each filter has it's own actions. |
If you choose "Mark Subject,"
you can set the "mark" to be used for the different
filters. |
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| If you operate XWall through an NAT router
or firewall, XWall can masquerade the correct IP and host
name for your domain instead your internal settings. |
XWall detects when your server's hard drive
fills up, and it stops when there is less than 50 megs
of free space to protect older NT servers from corrupting
the hard drive. |
XWall integrates a number of file-based
virus scanners. Since XWall assembles the messages, it
can effectively scan the messages for any viruses. |
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| The XWall CSS (Central Checksum Service)
protects from emerging threats including unknown viruses
and mass spam mailings. |
The XWall CSS filter can be set to different
levels of sensitivity. |
XWall protects your user directory from
harvesters by adding a delay to user verification. |
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| Automated Spam Filters |
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| XWall can use a large number of RBL™,
SLS, DNSBL and open relay services based on IP address
or domain name. XWall allows you to group the services
to achieve a minimum of false positives. |
XWall offers a link checking using SURBL.
When assembling the messages, XWall finds any links in
the messages and compares their IP addresses to the SURBL
blacklist. |
The XWall Bayes filter keeps a database
of good and bad words based on the findings of the other
filters. |
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The XWall Heuristic filter, a.k.a. Spamassasin™,
looks at different criteria of the message such as fake
MX and no subject. For each check the message fails,
it gets penalized. It the penalty score reaches the
level set by you, the message is considered spam.
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The XWall Greylisting filter only accepts
new senders if they resend the message once. Since that
adds a lot to the overhead, spammers do not re-send,
making Greylisting a very effective automated spam fighting
tool.
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| Manual Blocking |
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| XWall allows you to block all
or specified attachments incoming and/or outgoing. |
XWall can block e-mails using
a particular character set. Works great for emails from
China and Russia. |
XWall can block mail to and
from specified e-mail addresses or domains. |
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| With XWall, you can block text
strings or words in messages or subject lines. |
XWall also blocks headers identifying
that the sender is using particular mass mailers. |
XWall can be set to block exploits
like double extensions. |
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| XWall can block any e-mails
not addressed to users on your Exchange. Checking can
be real-time or of address lists. |
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| Excluding
Mail from Filters |
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| You can exclude
any domain or e-mail address from the XWall filters based
on a single filter or a global (all) exclusion. |
You can exclude words like "customer
service" or" tech support." If that word
is found in the message text, the message will not be
blocked. |
You can use the
white list SLS/RBLs™. These services have a database
of known spamers. |
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| When using global
excludes, you can select which filters are affected by
the automatic white list or the manual global excludes. |
XWall can keep an automatically
generated white list for each user or for the whole company.
The white list contains all addresses the users send e-mail
to. |
XWall can allow
passage for messages sent securely or by authenticated
senders. |
Not
sure if XWall will do the job for you? We are—and we
back it up with a 30-day, totally free trial period. But we
would like to give you some idea of just how easy it is to
combat spam and viruses. The screen
shots show you some of the setup tables. All features of XWall
are well tested and have been used for years by many Fortune
1000 companies. XWall represents an excellent value and exceptional
performance. We have installations where XWall filters messages
for well over 4000 accounts per server.
