We are having a problem with our Exchange 2003 server where sometimes e-mails will not be received. The sender does not get any bounced messages, the message just disappears. We have disabled or removed antispam, antivirus, and turned off all filtering in Exchange. The SMTP logfile still shows:
0 EHLO 250 0 SMTP -
0 MAIL 250 0 SMTP -
0 RCPT 250 0 SMTP -
0 TIMEOUT 121 1075732556 SMTP -
For many of the connections. Any ideas on this?