Forum Discussion
Weird forwarding activity
We have a weird problem. It was reported that our client's email is acting strange. There are two companies involved that are actually connected but have separate Exchange accounts. Suddenly, if s...
Message trace (the detailed one) will give you a clue as to what's happening: https://docs.microsoft.com/en-us/exchange/monitoring/trace-an-email-message/message-trace-modern-eac
Also, you might want to check the mailbox for any stored contacts that might be overriding the address.
Also, you might want to check the mailbox for any stored contacts that might be overriding the address.
VasilMichev Thank you for your help. We created an test message aimed at the target at Email address removed and got the usual result of the message being redirected on our contoso2.com Exchange server. We traced it and got the following result: (the company name is changed of course)
Message sent to contoso2-com.mail.protection.outlook.com at 104.47.57.110 using TLS1.2 with AES256
This was followed by a response saying it had been submitted
Finally a third response saying:
Message received by: DM6PR05MB5244.namprd05.prod.outlook.com
And of course, the email message is listed in the sender at contoso1.com as having been sent to the owner of contoso2.com and not the ap address.
This seems to be happening on the senders side of this communication but I don't undestand why.