>Actually, I'm not using a pix.  It's just a router using access lists,
>so the smtp auth issue isn't a problem.   I can send mail to the Imail
>server just fine.  I can even get messages delivered to local users.   I
>can also pop mail, the problem is that the Imail server can no longer
>resolve to DNS when I apply this access list (which is correct).

is the firewall between imail and your DNS?  Imail need access from any 
port above 1024 to the DNS port 53 tcp/udp.

smtp inbound:  from any ip:port tcp to port imail:25 tcp
smtp outbound: imail ip:port  tcp >= 1024 to any ip:25 tcp

dns inbound:   from any ip tcp/udp to DNS ip:53
dns outbound:  from DNS ip:port >= 1024 tcp/udp to any ip to any ip:53

Len


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