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RSP -> RE: ME on Exchange Server VS Standalone Server (3.Jul.2009 9:33:16 AM)
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I'd say yes to installing on Exchange, but that's because most of my clients are small businesses with one or possibly two servers and not much cash for extra servers! And besides, I think the advantages outweigh having a relay too.
Ok, you say "servers", suggesting you've got more than one Exchange. The actions labelled (Exchange server only) don't work in multiple Exchange server environments.
Do you have more than one server accepting email from the internet? If so, you'll need multiple installations of ME. Licensing allows this, but you'll need to set up the antispam synchronisation. It's a pain, and in my opinion a kludge.
If not, then install ME on your "bridgehead". If you want to tag emails, look into the rules manager. You'll need to get this installed on every exchange server (along with bayeswiz.exe) to make use of it. It generates a rule for each mailbox that looks for a specific keyword in the subject. If you tag emails with, say, [SPAM], then you can set up a rule for this to move the email to, say, Junk E-Mail. For troubleshooting, I find it better to tag emails with [SPAM-BA] [SPAM-SPF] etc, and set the rule up as [SPAM-.
Consider using IMF's functionality, as this certainly seems to complement ME's filtering. It's also done at the SMTP level, so spam emails don't make it into the organisation, reducing the bandwidth requirement and your storage requirements.
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