Forum Discussion
[SEMI-CRITICAL] Outlook rules aren't working when email encoding system is different
(First, note that I am a Korean, and my report may use a different term for the system because it's tedious to figure out the original term for what I am using. I believe you know the vibe I am talki...
There are three solutions
1. Client level: Disable 'Send on behalf of' permissions for shared mailboxes in Outlick settings
2. Server level: via Exchange Online PowerShell:
powershell
Set-Mailbox <shared mailbox> -GrantSendOnBehalfTo $null
3. Mail flow rules: rewrite sender address with Transport Rule (requires administrator privileges)