we have an exchange 2013 cluster:
2x Mailbox-Server (DAG)
The FQDN is correctly set on sendconnector on both cas servers.
Now we have the following problem:
We send many emails to externa mail system and then check the header on received mails.
Received: from smtp1.domainname.de (xxx.xxx.xxx.150) => That's right
Received: from smtp1.domainname.de (xxx.xxx.xxx.151) => That's false. We have false fqdn here. fqdn does not match with ip-adress. Correctly it must be smtp2.domainname.de
We could not find any false configuration on our side.
Do you have an idea how we can fix this problem?