Forum Discussion

dilipmenon's avatar
dilipmenon
Copper Contributor
Dec 07, 2018

Send-on-Behalf Permissions works from OWA but not from Outlook 2016

I have tried different steps like Download fresh OAB, Switching to Online mode, creating dedicated Ol profile. Add as additional mailbox etc. But in outlook Send-As works. I do not have both Send-As ...
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dilipmenon's avatar
dilipmenon
Copper Contributor
Dec 07, 2018

Hi Thuyavan, Thanks for your response. I am trying to get it working for the first time. I have a mail user object having full access and send on behalf on a mailbox. Send on behalf works from OWA but fails from outlook. Autocomplete, GAL update , online mode has been tried out already. Attached error.

VasilMichev's avatar
VasilMichev
MVP
Dec 08, 2018

When sending the message, make sure to select the address you want to send on behalf of directly from the GAL. Do not use any autocomplete or other "cached" entry. Press the From button, select "Other E-Mail address", press From again and select the corresponding object from the Address book dialog. If you have updated the OAB (which might take up to 48h in O365), you can use it instead, otherwise make sure to select it directly from the Online Global Address List.