Hello, there is always a line from where your responsibility starts and usually it is the first receiving SMTP server under your control. If you don't have anything in this server logs then that means that messages don't reach to your server and problem is elsewhere. And it's useless to search something from spam folders and other places when message haven't even reached to your server. If that is the case then you must start pester your customers ISP's or IT staff(if they have any) for more information about problem.
Markko -----Original Message----- From: Silvio L. Nisgoski [mailto:nisgo...@gmx.de] Sent: Friday, February 12, 2010 2:57 AM To: MS-Exchange Admin Issues Subject: Disappearing e-mail messages.... Hello, Could someone suggest where can I look for the reasons for some disappearing messages ? Customers that were able to send email to our people are saying they sent the emails, but our people say they never received. This started some time ago. Nothing in logs, nothing in spam filters. I will disable all filtering to see if it impacts , but don´t think so. Have perused through the 1k messages / day of spam, but the "phantom" messages are not here. Now , I know that users cannot be trusted not to delete a Mailer Daemon message without reading, but this is happening with people who used to communicate via email normally since a long time ago. Any suggestion for searching the problem ? System is 2003 - R2 with Exchange 2003. Thanks, Silvio.
