I am experiencing sporadic email delivery to public folders. At first I thought it was a Content Filtering issue, but now I'm not sure. I can describe the following symptoms, though not sure if all are related:
My test "sender" is a POP3 email account that I have through an unrelated domain, configured in Outlook Express, to keep separated from company email that is all Exchange Server 2007. When I send a message from firstname.lastname@example.org to email@example.com, nothing happens. I don't get an NDR back, and nothing arrives in the public folder, or the spam quarantine account, no indication at all that I sent anything.
When I try to telnet to the Exchange Server using the Pulic IP, port 25, the connection fails. I can connect using the name: smtp.company.com or smtp.company.local on port 25. When I use telnet commands to send a message from firstname.lastname@example.org to email@example.com, all replies are OK (sender, recipient, etc.) and the mail gets sent to the delivery queue. Soon after that, I receive an NDR in my Outlook Express account for firstname.lastname@example.org. I'm going to attach the exact NDR message, and maybe someone can tell me where to start looking for the problem.
Delivery has failed to these recipients or distribution lists:
There's a problem with the recipient's mailbox. Microsoft Exchange will not try to redeliver this message for you. Please try resending this message, or provide the following diagnostic text to your system administrator.
Sent by Microsoft Exchange Server 2007
Diagnostic information for administrators:
Generating server: sanjuantitle.local
#550 5.2.0 STOREDRV.Deliver: The Microsoft Exchange Information Store service reported an error. The following information should help identify the cause of this error: "MapiExceptionNotFound:16.18969:1E040000, 17.27161:0000000062020000000000004E00000000000000, 255.23226:9D000000, 255.27962:7A000000, 255.27962:0A000000, 255.27962:0E000000, 255.27962:0A000000, 255.27962:94000000, 255.17082:0F010480, 0.27745:15000000, 4.21921:0F010480, 255.27962:FA000000, 255.1494:00000000, 255.1238:00000000, 0.16668:0F010480, 0.39497:0F010480, 4.55881:0F010480, 0.27676:0F010480, 0.23580:0F010480, 0.36537:0F010480, 4.5587:0F010480, 0.65193:0F010480, 0.16668:0F010480, 0.39497:0F010480, 4.55881:0F010480, 0.27676:0F010480, 0.23580:0F010480, 0.36537:0F010480, 4.5587:0F010480, 0.65193:0F010480, 0.16668:1A010480, 0.39497:0F010480, 4.55881:0F010480, 0.27676:0F010480, 0.23580:0F010480, 0.36537:0F010480, 4.5587:0F010480, 0.65193:0F010480, 4.10456:0F010480, 4.5318:0F010480, 4.10104:0F010480, 0.57449:0F010480, 4.6025:05000780, 4.5257:05000780, 4.4606:0F010480, 255.1750:EF7B0000, 0.26849:71040000, 255.21817:0F010480". ##
Original message headers:
Received: from (192.168.40.75) by smtp.sanjuantitle.local (192.168.40.130)
with Microsoft SMTP Server id 8.1.291.1; Tue, 7 Oct 2008 14:28:04 -0600
Subject: new order 2
Date: Tue, 7 Oct 2008 14:28:04 -0600