Forum Discussion
Issue in SendOnBehalfTo
That's like rule #1 when working with send as/send on behalf of permissions - never ever select any pre-filled entry, either from the auto-complete cache or the from menu. Always make sure to select the address directly from the GAL.
VasilMichev what do you suggest if the address has been hidden from the GAL? Thanks
VasilMichev Thanks for you response.
I opened a case with MS and I knew that - how should it work..
this is what MS responded...
Recommended Next Steps:
When a shared mailbox is added as a New Account, Send on Behalf permissions won't work. Send on Behalf permissions only work when the account is auto mapped or added under the advanced mailbox settings.
For one user, please remove the permissions for the shared mailbox and then add the permissions back using the following PowerShell Command:
- Add-MailboxPermission -Identity "Shared Mailbox" -User "User to Add" -AccessRight "Permissions to mailbox" -InheritanceType All -AutoMapping $True
After the permissions have been applied and the mailbox automatically mapped in Outlook, please test the send of behalf permissions
Also, on the same user's machine, after the shared mailbox has been automatically mapped, please run the advanced Outlook diagnostic: https://support.microsoft.com/en-us/help/4098558/scan-outlook-by-using-microsoft-support-and-recovery-assistant
- The simplest way to resolve this is to empty Outlook cache folder (AppData\Local\Microsoft\Outlook\RoamCache) and not use autocomplete form.
*Back up the cache files so that you can restore the files if something goes wrong.
Manually enter the email address you want to send the message to, or find the person you want to send mail to from the GAL.
