We are using exchange on SBS2011 and the POP connector to access mailboxes on a 1and1.com hosted site.
After completing a recent SBS2003 to SBS2011 migration, one of the forwarding email accounts on the 1and1.com site is not working.
Specifically, there is a forwarding account setup on 1and1.com, where email sent to:
gets forwarded to:
It still works when I send a message to firstname.lastname@example.org from any other mail system, such as from my comcast account.
While logged on to a computer in the office where the SBS2011 server resides, as soon as I send a message via Outlook, I get an immediate reply:
Delivery has failed to these recipients or groups:
The e-mail address you entered couldn't be found. Please check the recipient's e-mail address and try to resend the message. If the problem continues, please contact your helpdesk.
Diagnostic information for administrators:
Generating server: SERVER2.mycompany.local
#550 5.1.1 RESOLVER.ADR.RecipNotFound; not found ##
Original message headers:
Received: from SERVER2.mycompany.local ([fe80::38cc:60ab:9271:3737]) by
SERVER2.mycompany.local ([fe80::38cc:60ab:9271:3737%12]) with mapi id
14.01.0218.012; Wed, 22 May 2013 17:23:02 -0500
Content-Type: application/ms-tnef; name="winmail.dat"
From: Julie Smith <Julie@mycompany.com>
To: "email@example.com" <firstname.lastname@example.org>
Subject: test #1 5:22PM
Thread-Topic: test #1 5:22PM
Date: Wed, 22 May 2013 17:23:01 -0500
Why is the local exchange server intercepting this email message? I expect it to go out through the SMTP server and then back in through the POP connector.