Exchange: How to you use an SMTP address other than your default reply-to from Outlook

emailexchangeexchange-2010outlook

Our users have mutliple SMTP addresses in Exchange. We set one as their default reply-to.

From Outlook (for e.g., I'm using 2010 64 bit in Windows 7), in the e-mail compose window, there's a dropdown with all the user's SMTP addresses:

outlook From dropbox

However, when I chose one that is not my default reply-to address, I get an error like the following:

Delivery has failed to these recipients or groups:

Recipient's name
You can't send a message on behalf of this user unless you have permission to do so.
Please make sure you're sending on behalf of the correct sender, or request the necessary
permission. If the problem continues, please contact your helpdesk.

I don't understand. That's one of my SMTP addresses so why wouldn't I be able to send as it?

What would we have to do to allow allow all users to be able to send from any of their SMTP addresses?

Best Answer

This is not possible without a little bit of work... certainly not right out of the box.

See here:

http://www.windowsitpro.com/article/email/how-can-i-use-an-alternate-address-with-exchange-server-

The cleanest option is to set up pop or imap and add a second "account" in outlook that uses pop or imap and SMTP to send using the alternate address. But it is a manual setup for each address.

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