=> Desabled notes domain name for internet paththu address

Hi every body.

Here the design of my architecture :

Server Lotus @domainLotusA <=> [DMZ] Server Lotus @domainLotusB [DMZ] <=> SMTP Relay to Internet

When I receive an incoming email, the address looks like : toto@toto.com@domainLotusB

How can I delete the “@domainLotusB” at the end of the incoming internet EMail ?

In my global domain document I put “no notes domain”

Thanks for your help.