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Remote Server returned '550 5.7.106 APPROVAL.InvalidContent; Invalid content. [Stage: OnCreatedEvent
Hello,
I have hybrid exchange environment where I have set moderator approval on one onprem dynamic distribution group. When approver who is in o365 approves mail delivery, he gets NDR with following error:
Remote Server returned '550 5.7.106 APPROVAL.InvalidContent; Invalid content. [Stage: OnCreatedEvent][Agent: Approval Processing Agent]'
Sender of NDR is onprem arbitration mailbox.
Remotedomain settings should be ok.
Anybody have idea what is issue here?
Thank You.
1 Reply
DoNotHackMe I have the same issue, will be watching this thread. Have you opened a ticket with MSFT?
