Restricting postfix mail incoming only from Barracuda firewa

gnewak

I'm trying to find a way to not accept mail to our postfix email server(s) unless it goes to our Barracuda firewall first (and gets filtered/blocked for spam).

We have changed our DNS entries and it has propagated, but there are a number of spammers out there using non-updated dns servers or that haven't refreshed their local cache.

The solution doesn't appear to by in mynetworks. I'd be interested in any ideas folks might have.

Thanks.

Google