The email originated from one of our redhat servers using sendEmail 1.5.5 to send the message. Basically it generates the message, connects to our hub transport via SMTP to deliver the message and from there it goes to the specified mailboxes. The problem is the message was delivered to all but one of the recipients. The message was technically generated internally, and all recipients were all internal. No other problems have been reported regarding the one recipient the email failed to send to. Everyone can send emails to the failed recipient from inside and outside. Unfortunately I'm unsure as to what the problem is as it seems the recipients mailbox is in working order along with all of the other mailboxes. Below is the error/bounce reported from the Hub Transport server #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: "MapiExceptionObjectDeleted:16.18969:3E000000, 17.27161:000000004402000000000000BB00000000000000, 255.23226:00000000, 255.27962:7A000000, 255.27962:94000000, 255.17082:0A010480, 0.27745:4D000000, 4.21921:0A010480, 255.27962:FA000000, 255.1494:9C000000, 255.1238:00000000, 6.21970:0F01048040008F660F010480, 6.14164:1DFAFFFF02016D670F010480, 6.8660:0F01048002016D670F010480, 0.18658:0F010480, 6.11956:0F01048002016D670F010480, 4.15604:0F010480, 6.14164:1DFAFFFF02016C670F010480, 6.8660:0F01048002016C670F010480, 0.18658:0F010480, 6.11956:0F01048002016C670F010480, 4.15604:0F010480, 6.21970:0F01048002018A670F010480, 4.5505:0A010480, 4.5041:0A010480, 4.4465:0A010480, 4.6833:0A010480, 4.3564:0A010480, 4.5318:0A010480, 4.10104:0A010480, 0.57449:0F010480, 4.6025:05000780, 4.5257:05000780, 4.4606:0A010480, 255.1750:2F000000, 0.26849:00000000, 255.21817:0A010480". ## Original message headers: Received: from SERVER1 (10.80.48.137) by HUBTRANSSERVER (10.80.48.45) with Microsoft SMTP Server id 8.2.176.0; Wed, 22 Dec 2010 09:24:48 -0500 Received: from SERVER1 (localhost.localdomain [127.0.0.1]) by SERVER1 (8.13.8/8.13.8) with ESMTP id oBMEOnNs024411; Wed, 22 Dec 2010 09:24:49 -0500 Message-ID: <401199.594230519-sendEmail@SERVER1> From: "sender@company.com" <sender@company.com> To: "recip1@company.com" <recip1@company.com>, "recip2@company.com" <recip2@company.com>, "recip3@company.com" <recip3@company.com> CC: "recip4@company.com" <recip4@company.com>, "recip5@company.com" <recip5@company.com> Subject: ESR System Request Number [ESR3262] has been completed. Date: Wed, 22 Dec 2010 14:24:49 +0000 X-Mailer: sendEmail-1.55 MIME-Version: 1.0 Content-Type: multipart/related; boundary="----MIME delimiter for sendEmail-162140.561108576" Return-Path: sender@company.com

Hi, Try to create an additional SMTP email address for the recipient. Then sending the message to this new SMTP email from sendEmail. What's result? Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. Thanks Gen Lin-MSFT

I have made the change and requested them to test it out. I'll report back once they tell me what the results are.

Unfortunately I'm unsure if that fixed the issue. I added an additional SMTP address and had them send again in a similar fashion and the email went successfully via both addresses.