Exchange 2007: "Send As" [Anyone]
- From: Tyrven <Tyrven@xxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Thu, 22 Jan 2009 13:13:03 -0800
I have an IIS 7.0 web server which sends mail on behalf of registered users
based on email addresses stored in the database. These users cannot be
relied on to have Exchange accounts. In Exchange 2007, this yields "Mailbox
unavailable. The server response was: 5.7.1 Client does not have permissions
to send as this sender".
I can enable this by disabling "Windows Authentication" on the Receive
Connector and, in turn, enabling the "Anonymous users" Permissions Group.
However this leaves me wide open (bad). Alternatively I can setup a port
that only the webservers submit mail through, limited by IP addresses and
routing policies; this is the best option I've identified.
My question: Is there a way to set permissions for a specific user (in this
case, the websites' application pool identity) to send as anyone - like a
universal "Send As" permission? This way Windows Authentication is still
enabled and required and the websites can continue to use the default port 25
but we're not opening ourselves up to spam relay.
Tyrven
.
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