Gmail Sender not receive Out Of Office message

Copper Contributor


I tested Out Of Office message two different organizaton. One of them use O365 Exchange Online the other one use On-Prem Exchange 2019 with the latest patch level.
OOF messages works except the sender come from gmail domain.
The ExO org use spf dmarc and dkim records, the on-prem org use spf and dmarc only.
Can anybody explain to how can i solve this issue?

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