Hello.
We have Exchange 2013 Organization. Recently we encountered a problem with mail flow. When user sends a message, it stuck in outbox folder in Outlook or in Drafts in OWA. Sender and Recipient is reside on different mailbox servers. In Tracking log i see that a lot of Receive events is generates
In details of events i can see that Client and Server the same server. And both use IPv6. Looks like a loop
This events accumulates until user deletes a message from Outbox or Drafts. Why is it can be?