Archive for the ‘windows’ Category

Connection Filtering in Exchange 2003

Sunday, May 2nd, 2010

A client recently had problems with a compromised account being used to send SPAM.  Unfortunately, in this case, the client does not require authenticated SMTP from internal mail clients.  So, at first glance, it appeared that there would be no way to prevent the compromised account from sending (short of blocking his IP on the MTA’s firewall or removing the offending computer from the internal network).


ClamAV for Exchange Anti-Virus

Friday, April 16th, 2010

Wouldn’t it be great if there were a free anti-virus package that could scan Exchange mail?  Normally anti-virus packages for Exchange are priced based on the number of Exchange mailboxes that will be protected.  In many cases, the cost to provide anti-virus protection for an enterprise can rise into the tens of thousands of dollars.  Well, maybe this isn’t needed: ClamAV, qmail and Exchange mail transport rules to the rescue!