Hello All,

Installed Zimbra CS community edition Release 7.1.3_GA_3346.RHEL6_64_20110928134428 for RHEL 6 64 bit.
This installation is going to be used only as Smart Host for our exchange server. It will not receive any incoming emails or send emails from the users directly.
All the users are going to be on exchange and they would send the emails using exchange and exchange in itself would use Zimbra as Smart Host to send the emails to the outside world.
My requirement is to check all the outbound emails from Zimbra for Spam and AV and enable anti-spamming in such a way that it will scan for the subject line and block the emails from going out if it matches certain patterns.
Is this functionality available with Zimbra MTA? And if this is possible, how do I enable and configure outbound anti-spam scanning?