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Can't send e-mail as another user on Exchange 2007

ney_santos asked
Hi there,

I'm trying to send an e-mail  as User B in Exchange 2007. I already gave the permission Send As via Exch Console, aleary used the command: [PS] C:\Windows\System32>Add-MailboxPermission -Identity "Ney Santos" -user UserB  -AccessRight SendAs, already gave full control in active directory security tab, and the message keeps returning saying that I don't have permission to send as User B.

Does anyone knows how to do it please?

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Solutions Architect
send as permissions takes time to propagate so either wait or restart the information store and system attendant service
First thing I would do is give myself Full Permissions via the Exch Console.
Then use OWA to open another mailbox / the user account you want to send message from.

Oh, the easiest way to send a message from another user is to modify the "From" textbox to the username you wish to use on the new message.



I restarted the information Store. Thanks

Confirmation (same problem as the OP): restarting the information store fixed the issue: