This is an issue related to autoreply messages not being received by email recipients when Xink server-side is enabled.
Explanation: Microsoft no longer supports Autoreplies when a forwarding rule exists. See related Microsoft article.
To resolve this issue, a new Microsoft 365 transport rule must be created to exclude Out-Of-Office emails.
Go to your Exchange Admin portal.
Click Mail Flow > Rules and Add a rule
Set the conditions with the below details:
1. Apply the rule only when message type is 'OOF'
2. Add the action to set the header called 'x-xink-handled' value to 'yes'
Enable the rule and set the priority to 0.
