[Mailman-Users] Mailman 2.1.5 breaks when I upgrade from postfix 1 to 2

[Mike Avery]

I've been trying to upgrade my FreeBSD 4.8 system from Postfix 1.1.12 to 
2.2.  Every time I install it, it works fine.  However Mailman stops dead. 

When I uninstall 2.2 and revert to 1.1.12, Mailman is happy again.

Looking at the current versions, I suppose I should try for Postfix 2.3 
now instead of 2.2.... but I doubt the issues would change somehow.

Can anyone point me in the right direction to figure out what's going on?

Thanks,
Mike