I06. In Zywall's Anti-Spam Feature, What's Your Recommendation To Handle Identified Spam Emails; I07. What's The Specification Of Anti-Spam Feature In Zynos V4.01; I08. How Do I Keep Signatures Of Anti-Spam Service Update - ZyXEL Communications ZyWall 35 Support Notes

I06. In ZyWALL's Anti-Spam feature, what's your recommendation to handle identified
spam emails?
1. There two actions ZyWALL can take against identified spam emails: to block or to tag.
2. Pros and Cons
If you choose to block them, then you have no control over false-positives.
If you choose to tag them, then you still have the spam email traffic on your mail server and everybody
has to set a rule in outlook to filter the spam emails into a dedicated folder.
3. Recommendation
Most IT managers choose "tag" spam emails, which is also our recommendation although
ZyWALL/Mailshell Anti-Spam technology performs very low false-positive.

I07. What's the specification of Anti-Spam feature in ZyNOS v4.01?

Supported protocols
Action on spam emails
Default Setting
Maximum concurrent sessions ZyWALL 5: 5

I08. How do I keep signatures of Anti-Spam service update?

From the current design, there is no local spam signature database maintained on the ZyWALL UTM
devices. As a result, you don't have to update the AS signature for the device. The transactions and
queries between AS-enabled ZyWALL devices and our rating server are taking place dynamically and
automatically in the background.
However, you may want to maintain your own black list/white list on device to maximize the
effectiveness of the Anti-Spam security service.
Specifications of Anti-Spam feature
POP3 and SMTP protocol
For Pop3, it can "tag" the spam email;
For SMTP, it can do "tag" and "block".
Enable Tag with [SPAM]/[PHISHING] subject
ZyWALL 35: 15
ZyWALL 70: 30
All contents copyright (c) 2006 ZyXEL Communications Corporation.
ZyWALL 35 Support Notes
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