I am using exchange 2003 on my 2003 server and I am getting 4006 on my server and some of my sent mail are still in the que on my virtual server.most of the errors are on four domains us army.mil, harrisbank.com, yhoo.com and hotmail.com here is my event log:
Event Type: Warning
Event Source: MSExchangeTransport
Event Category: Connection Manager
Event ID: 4006
Time: 4:50:20 AM
Message delivery to the host '188.8.131.52' failed while delivering to the remote domain 'sbcglobla.net' for the following reason: The remote server did not respond to a connection attempt.
Also ATT host my e-mail account. The only reason I use virual SMTP connection with my exchange server is because a few years ago when I had windows 2000 server and exchange with outlook 2000. I had issues with my outlook clients with both exchange and internet account setup on one profile. This issue cause my internet account mail trying to go thru exchange server and not just go to the IP's mail server. The work around was to setup a virtual SMTP connection for my outbound internet mail. I also want to know do I still need this type of connection with outlook 2003.