[Wolves] Couple of email (Exim) questions

[Wayne Morris]

Wayne Morris wrote:
> I'm settng up a back up email server and having difficulty with 
> hostname type problems
>


Fixed the hosts bit, now I've having a related problem.

I've now got two mail servers on a home network , call them A and B.

Email in to A and all works well.
If I direct email in to B from the router/outside world and then 
supposed to be forwarded to A causes a loop because B looks up the ip 
address for A as the
outside world and sends it to itself.
However, if you ping the domain name from B you correctly get the ip 
address for A


Any ideas