Mail Proxy Anti-Spam|
GTA's Anti-Spam option offers customizable spam blocking for GTA's
firewall email proxy. Simply utilize the email proxy on your GTA firewall
for your SMTP email, and activate the Anti-Spam subscription - no software
to download and install.
The Anti-Spam greylisting settings offer enhanced email filtering before
the email reaches the email server. Greylisting is designed to protect
users from spammers that use fire and forget email applications, which
are created to send spam messages, but never attempt to retry delivery
if the first attempt fails. Greylisting significantly reduces the number
of emails which are scanned by spam rules, so email processing is more
efficient. With a two pronged attack on email, spam is virtually eliminated
while legitimate email is efficiently processed and received at the
GTA's Anti-Spam option is powered by MailShell Anti-Spam's Spam
Recognition System. This technology reviews each message in fractions of
seconds by four spam identification engines utilizing more than 300,000
algorithms and rules to identify spam with a high accuracy rate while
preventing false positives. ?Phishing? and other fraud-based definitions
are established based on SpamRepute Index, an advanced statistical
analysis-based method of quantifying email senders' reputations and
is included in the SpamCompiler technology. The results are combined
using SpamScore, a proprietary Bayesian statistical formula, into one
final spam probability score. The Anti-Spam subscription option
automatically check for rules updates to ensure the accurate weighting
against the most up-to-date rules for formulation of the spam probability
SpamScore rankings range from 0-100 and are utilized by the Anti-Spam
subscription to rank emails as spam (confirmed) or probable (suspect).
Firewall administrators can establish thresholds based on SpamScore for
confirmed and probable spam to fine tune the control of the spam filtering
to match corporate needs. Once Anti-Spam thresholds have been established,
administrators may choose to accept, reject, tag or quarantine confirmed or
suspected spam emails.
When used in conjunction with the Mail Proxy's basic features, a corporation
can virtually eliminate spam emails delivered via the firewall email proxy.
|GB-2500|| || |
|GB-2100|| || |
|GB-820|| || |
|GB-250e (Rev B)|| || |
|GB-250 (Rev B)|| || |
|GB-Ware|| || |
|Detects and blocks spam emails in real time|
|Customize black lists and white lists by email name, domain or IP address|
|Real-time Blackhole List (RBL)|
|Delete, tag or quarantine emails based on your spam category criteria|
|False positives minimized through SpamScore technology|
|Automatic anti-spam rule updates|
|Logging & Reporting|
|Database rules updates scheduled every 15 minutes|
|Available for all GTA Firewalls running GB-OS version 5.2 or higher.
MailShell Anti-Spam Engine Details:
Copyright © 2015 Global Technology Associates, Inc. All rights reserved.
'GB-OS' and 'GB-Ware' are registered trademarks of Global Technology Associates, Incorporated.
'Global Technology Associates' and 'GTA' are service marks of Global Technology Associates, Incorporated.