We are running Exchange Server 2003 and have an intermittent problem with incoming e-mail to certain addresses not getting through. Tracking these messages using Message Tracking Center, they get as far as "Message Submitted to Categorizer" and then ... nothing. If I send a outbound message to the same person and they reply, we do get the reply. I have seen several posts related to the messages being stopped at this point, but nothing that matches our issue. Any advice would be appreciated! Rob OdumChildren's Theatre of Charlotte

Are you using any kind of spam or virus filter on this server? Do you receive an NDR? Have you tried changing the diagnostics logging level for MSExchangeTransport to see if it generates any errors? To change diagnostics logging level: http://support.microsoft.com/kb/821910

Hi Rob, I agree with Martin, please raise up transport related logging level and paste the related error here. Please refer to the KB821910 for more information. Thanks, Elvis