I would like to install another anti spam on top of the SF box. Then turn SF as the second layer of anti spam.

My first anti spam listen on port 25, then SF listen on port 26. Incoming email will go to 1st AS then SF.

How do I configure SF don't blacklist it own IP meantime still enjoy anti virus, bayensian filtering & so on. Meaning, I just want to turn off SF network layer filtering & blacklist function?

Now see SF seem to be treat it own IP as We Are Sender then ignore all the filter.

Thank you.

;by default SpamFilter will not allow any IP to relay thru it except for 127.0.0.1 (localhost). Change DoNotTrustSelfByDefault to 1 if you do not want localhost to be able to relay
DoNotTrustSelfByDefault=1

• Reject if no Reverse DNS
• MAPS
• IPs
• Country
• Honeypots
• SPF
• SFDB

Just out of idle curiosity, what type of anti-spam are you running as a primary? I like the speed that SFE has and the only thing that I would consider putting in front of SFE would be a greylisting system. SA filter takes way too much in the way of CPU resources and we use it as a secondary only. But always looking for a better way to fight spam.

Thanks!

I feel your pain about spending money trying out different AS methods. Been there, done that, and got the empty wallet to prove it.

You can use SF and the AuthorizedTo list to only accept valid users. We have a script that polls our control panel for any new email inserts/deletes and updates our list (in our case sql tables since we are now on SFE) every 10 minutes. We have been able to do this with 2 different mail servers (merak & smartermail) and if a better mail server comes along tomorrow I'm confident we can do it for that mailserver as well as long as it has an API of some sort. Using modusgate in your AS solution your kinda stuck using that mail server and can't quickly jump to other mail platforms without totally redoing your AS solution. Not trying to talk you out of using it, just giving you more things to consider in your quest for the best solution.

I shudder when I think of how much time (years)  I've spent on perfecting our spam filtering and getting it to the point where we are happy with it. Luckily Roberto and his team have been responsive and listened to our suggestions and SFE is coming along just great!!!