We receive a large number of obvious malware attachments, which ClamAV almost never detects. In order to further protect us, I am now blocking bad file extensions, but this isn't really a substitute for decent AV.

We've now started getting large numbers of macro viruses being sent to us, purporting to be remittance advices, invoices etc. and I am sure it is only a matter of time before a user opens one by mistake.

So I am looking for a simple replacement for ClamAV that will be more effective, one that will work well with iredmail. It used to be that f-secure was popular on Linux mailservers, is that a good idea? I am expecting to have to pay for something better than ClamAV.

I appreciate iRedMail are trying to find ways to monetise their project, could an enhanced paid-for AV solution be an option?

Thanks,
Chris.

==== Required information ====
- iRedMail version: 0.8.7
- iRedAdmin-Pro-LDAP: 2.1.2
- Linux/BSD distribution name and version: Ubuntu 12.04
- ClamAV 0.98.5/19890/Wed Jan  7 05:49:13 2015
====