Something happened to my exchange 2010-server, and we're getting "sender IP must resolve" -errors from all over.
The problem is, that I have FQDN set as mail.mydomain.com, but nevertheless in message it shows as servername.mydomain.local (you can see from attached picture and the message header below)
Whatever I put there, it simply keeps pushing out the .local in message-id, and we keep being blocked in antispam.
How do I change that? I'm pretty positive that the root cause for the error message is this .local thing.
Our MX-records for the domain:
mx 1 mail.mydomain.com
mx 10 mail.backupdomain.com
TXT mydomain.com. v=spf1 a mx
And here's the message header
Received: from myserver.mydomain.local ([fe80::a9ff:d115:132c:5db
3%28]) with mapi id
14.03.0123.003; Wed, 7 Sep 2016 00:52:42 +0300
From: "Me" <address>
To: "TestDude" <address>
Date: Tue, 6 Sep 2016 21:52:41 +0000
Accept-Language: fi-FI, en-US