Perhaps you need a separate MX entry for each one of the peer
servers, e.g.
mydomain.com IN MX 10 peerserver1.mydomain.ch.
mydomain.com IN MX 20 peerserver2.mydomain.ch.
mydomain.com IN MX 30 peerserver3.mydomain.ch.
mydomain.com IN MX 40
peerserver4.mydomain.ch.
If Ipswitch's knowledge base does not clear up the issue, send them
a mail and ask. My questions have usually been answered within one
day.
Marius
