Question about postfix spam filtering

John Nielsen lists at
Wed Jul 6 15:41:22 MDT 2016

See the "content_filter" config option for postfix. It takes an IP and port. Most of the examples you'll see have the IP set to, but nothing says you can't set it to your home machine's IP.

You may also want to look at amavisd-new as a wrapper around spamassassin and clamav. It's pretty straightforward to set it up as a content filter for Postfix.

> On Jul 6, 2016, at 3:25 PM, Brian J. Rogers <captbrogers at> wrote:
> I already have a postfix server going with some spam filtering, but what
> I'd like to do is offload that work to an old desktop at home. I've done
> some searching on it but I'm not even sure what to use as a search phrase
> so I just end up being confused.
> Is it possible to have postfix on my remote server forward any incoming
> email to my home machine (which will be running as a Linux server, mostly
> for this purpose) where it can get cleaned using ClamAV/SpamAssassin. Then
> send it back to the remote machine to be delivered to the user's mailbox?
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