Domino server fails to send mail to Exchange via the CMN Mail Connector (4319966)

• Domino server fails to send mail to Exchange via the Coexistence Manager for Notes (CMN) Mail Connector
• The following error patterns can be seen in the Domino log:

[13E8:0009-0E98] 09/17/2013 03:50:39 PM  Router: Message 00727F33 transferred to 10.1.1.1 for user@example.org via SMTP
[13E8:0011-1234] 09/17/2013 03:50:40 PM  [13E8:0011-1234] SMTPClient: Connection broken after an error sending DATA command
[13E8:0011-1234] 09/17/2013 03:50:40 PM  [13E8:0011-1234] SMTPClient: Attempting to Disconnect:
[13E8:0011-1234] 09/17/2013 03:50:40 PM  [13E8:0011-1234] SMTPClient: Connection already disconnected

[13E8:0018-0F74] 09/17/2013 02:10:05 PM  [13E8:0018-0F74] SMTPClient: ReceiveResponse: 250 2.1.5 Recipient OK
[13E8:0018-0F74] 09/17/2013 02:10:05 PM  [13E8:0018-0F74] SMTPClient: ReceiveResponse: 354 CMN send data.  Terminate with <crlf>.<crlf>
[13E8:0018-0F74] 09/17/2013 02:10:05 PM  [13E8:0018-0F74] SMTPClient: Connection broken after an error sending DATA command

[13E8:0009-0E98] 09/17/2013 02:10:05 PM  Router: Error transferring message 0069202A via SMTP to 10.1.1.1  503 5.5.2 Sender already specified

[13E8:0015-1084] 09/17/2013 02:27:43 PM  [13E8:0015-1084] SMTPClient: ReceiveResponse: 451 4.4.3 Temporary server error. Please try again later ATTR2
[13E8:0015-1084] 09/17/2013 02:27:43 PM  [13E8:0015-1084] SMTPClient: ReceiveResponse: 354 CMN send data.  Terminate with <crlf>.<crlf>
[13E8:0015-1084] 09/17/2013 02:27:43 PM  [13E8:0015-1084] SMTPClient: Data Send Succeeded 5 bytes

[13E8:0018-0F74] 09/17/2013 02:27:08 PM  Router: No messages transferred to [10.1.1.1] (host 10.1.1.1) via SMTP: SMTP Protocol Returned a Transient Error
[13E8:000A-1210] 09/17/2013 02:27:08 PM  Router: Failed to connect to SMTP host [10.1.1.1] because SMTP Protocol Returned a Transient Error

[05A4:0009-032C] 09/16/2013 05:09:41 AM  Router: Error transferring message 0037D174 via SMTP to 10.1.1.1  Invalid Internet address specified.