So far I have come up with:
1. Spamassassin + clamavconnector
2. Mailscanner + clamav
3. ASSP X
4. RVSKIN solution usuing Exim+Exiscan+Clamav+RBL+Spamassassin+SARE+Razor+DCC
What solution do you prefer and why? I'm not really looking for a solution where clients can change settings. I would rather keep a serverwide config. All feedback is much appreciated.