#550 5.1.3 STOREDRV.Submit; invalid recipient address #SMTP# Exchange 2010

Question

We have one user who is getting undeliverable bounces for some emails they send. These bounces look like
Delivery has failed to these recipients or groups:
The format of the e-mail address isn't correct. A correct address looks like this:
[email protected] Please check the recipient's e-mail address and try to resend the message.
With the header:
#550 5.1.3 STOREDRV.Submit; invalid recipient address #SMTP#
Original message headers:
Received: from xxxxxxxx ([2002:80e8:f350::80e8:f350]) by
 xxxxxxx ([::1]) with mapi id 14.02.0298.004; Wed, 5 Sep
 2012 11:30:27 +0100
Content-Type: application/ms-tnef; name="winmail.dat"
Content-Transfer-Encoding: binary
From: xxxxxx
To: xxxxx
Subject: FW:
Thread-Topic: Economics
Thread-Index: Ac2GxPSoAC0JPealQhq9mnAnQxf7SQEiPj2gAADJepA=
Date: Wed, 5 Sep 2012 11:30:27 +0100
Message-ID: <7D0ACDCF411B26429DC7355744AEFF9A02D8AC@xxxxxx>
Accept-Language: en-GB, en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator: <7D0ACDCF411B26429DC7355744AEFF9A02D8AC@xxxxxxx>
MIME-Version: 1.0
X-Originating-IP: [xxx.xxx.xxx.xx]
So far most of the bounces for this user appear to be to the same domain which takes the format xxx.ac.uk our domain is yyy.xxx.ac.uk
We are currently using Exchange 2010 having migrated in the last month from 2003. We are also using an Edge server.
Thanks for any help

Answer 1

On Wed, 5 Sep 2012 11:52:43 +0000, Rah33 wrote:
>I have noticed that so far the addresses that have bounced back are Mail Contacts that have been created on the Exchange server. If you go into the properties for one of these contacts you get a message saying that some properties are invalid and will
be replaced with defaults. It also prompts to update the contact.
If you update the contact does it eliminate the problem?
What properties are invalid? It isn't uncommon to find "alias"
properties that contain spaces or other characters that earlier
versions (i.e. pre-Exchange 2007) allowed.
Rich Matheisen
MCSE+I, Exchange MVP
--- Rich Matheisen MCSE+I, Exchange MVP