Pat McNamara I first came across Pat McNamara on the Joe Rogan Podcast Episode #1262 in March 2019. He is an interesting cat. He spent 22 years in the US Army mostly in Special Operations units. He works out like an animal everyday. He is an expert marksman. He could kill you with his bare hands. But he also doesn’t…
Issue: We recently configured our Exchange Hybrid setup and were experiencing this error when sending mail from our mailboxes migrated to Exchange Online to the mailboxes still on Premise that had the alias: @ourdomain.mail.onmicrosoft.com (On Premise Mailboxes had this alias setup in preparation for migrating to Exchange Online). Cause: We use Mimecast for our email filtering. The mail loop was…