Qmail: relay only from selected servers based on rDNS
- by Frank
I'm looking for a way to disable Qmail relaying for everyone, but allow one certain group of hosts to do so.
These hosts all use the same identifying rDNS entry.
In Exchange 2003, Postfix, Exim and cPanel this can be achieved pretty easily.
However, the only to do this with Qmail is to do this based on IP's.
The IP's however tend to change. These…