Well the title pretty much says it all.  This post is going to address a pretty specific situation.  You’re running qmail and you want to send all outgoing emails through your Barracuda spam firewall.  Easy right?  No, not easy… well not easy if you have no clue what you are doing.  And try to find some documentation on how to do it, I dare you.  It pretty much doesn’t exist.  After a couple weeks of searching and trying to get it to work myself, I decided to put together this little guide.

Now if you are installing qmail for the first time and are trying to figure out how to do this, then you are in an easier situation than I was.  Unfortunatly for me, my install of qmail was in full production mode and relied on daily by 30,000+ users.  I didn’t have the luxury of messing things up.

NOTE: This guide assumes that your qmail install is working to be able to at least send email.  If you need help with initial configuration, I suggest you check out qmailrocks.org.

The Guide

Configuring qmail to send outgoing mail to a spam filter requires setting up an SMTP smartroute.  [Read more...]