This material is copyright and is licensed for the sole use by Kliwon Klimis on 28th October 2008 425 cilce, , frood, grradt, 525254

Chapter 5

There are three settings within the Admin console of Zimbra that affect anti-virus.

They are:

Definition update frequency (hrs) – This is how often you would like the server to go out and update its virus definitions. This is a background process and in my experience does not put much of a load on the server. The default is every 2 hours.

Block encrypted archives – ClamAV does have a limitation that it cannot read encrypted archives. So with this box checked, no encrypted archives will be allowed to pass through the email server to the user.

Send notification to recipient – This setting sends the intended recipient an email message informing them an email was blocked, due to the suspicion of having a virus. The email also mentions the subject line and who the email was sent from.

I would have to say that the built-in anti-virus and anti-spam programs are one of the biggest selling points for Zimbra. As a long-time administrator and implementer of email systems, including exchange, I have always had to find third-party, costly, and sometimes difficult tools to accomplish what Zimbra has built in. This is not to say that the Zimbra tools are better, or worse, than the third-party tools for other systems, only that the integration is more natural, the configuration is easier, and of course the price is right.

Securing the Operating System

Due to the fact that Zimbra runs on many flavors of Linux, and also runs on MAC OS X, a lot of time will not be spent in dealing with specific examples of how to configure the operating itself. However, what I will be dealing with is which pieces of the operating system any email administrator should be concerned about when implementing the Zimbra suite.

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