I'm no expert at all on mailservers.
Maybe I'm wrong but I got an expression that some not all
MTA checked if the RDNS host is right before transfering.
Sending an email to host abc.com 11.11.11.11 will be
be sent to SMTP host local.com 22.22.22.22 (MX record of abc.com)
RDNS for 22.22.22.22 is local.com
In this case the mail ends up at local.com insted of abc.com
If it is like this then it is simple thing to change the MX record.
/Simon |