Wrong domain in sender' address

Hi,

I have a weird symptom here and don’t find a solution.

A user from a specific Domino domain (AX1) is sending a mail to a user in another Domino domain (AX2) . Both domains have their on Internet domain (AX1.com, AX2.com).

When the user from AX2 is sending a notes mail to a user in AX1 and this user (AX1) has a mail forwarding to a smtp address, the reply address has the internet domain from AX1. The correct reply address should be the one from User@AX2 .

Any ideas or totally confused ?