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RodoMCP's avatar
RodoMCP
Copper Contributor
May 31, 2022
Solved

Outlook Desktop won't send from SharedMailboxes after enabling "SendFromAliasEnabled"

After enabling the feature "-SendFromAliasEnabled" in Exchange Online Powershell, Outlook Desktop won't send emails from sharedmailboxes anymore. Error: "You do not have the permission to send the me...
  • RodoMCP's avatar
    RodoMCP
    Jun 01, 2022

    VasilMichev Actually I found the issue.

     

    But,

    • I was not using Outlook Autocomplete
    • Outlook cache was deleted.
    • Profile remade

    ... and still had that problem.

     

    Solution: I realized when typing the address in the "From" field Outlook was resolving vs. the Offline GAL, but these sharedmailboxes were not syched to the Offline GAL.

     

    Once I fixed that, there no issues sending from Outlook Desktop.

     

    If anyone have same issue after enabling send from alias in Exchange, make sure the sharedmailboxes are synched to the Offline GAL. At least this worked for me.