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Exchange 2010/2016 Coexistence - Migrated Mailbox to 2010. Can't send Internal or External Email RRS feed

  • Question

  • I migrated my mailbox from 2010 to 2016 and I'm unable to send internal or external emails. I don't get a NDR..no error message..they appear to send successfully. No one receives a thing from me. We route mail through a smart host (Barracuda spam filter) but it doesn't seem to be an issue.
    Thursday, June 8, 2017 3:14 PM

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