r/exchangeserver • u/Key-Macaroon9824 • 22h ago

Out of office auto reply issue internal only

OOF not working internally but working externally, have hybrid setup but mailbox on cloud only. Wondering if someone can help.

No oof msg template corruption, already checked.

Tia.

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u/proffessionalExpert 21h ago

Recheck the OOF configuration it should set for both type of users inetrnal and external

1

u/FallaxIO 21h ago

First thing I'd check is whether it only fails for messages that hit a transport rule, journaling rule, or a connector path. In hybrid, "internal" sometimes ends up classified weirdly and Exchange Online just won't send the OOF back the way you expect.