SMTP Connection Aborted

If the SMTP connection aborts, check whether the IMTA is running (SMTP server included):

% imta process

The result should list the three following processes (exactly one of each)

job_controller
dispatcher
<SMTP>

Restart the IMTA if it is not running.

If the IMTA continues to abort, look at the tcp_smtp_server log files to determine the problem.

To debug the IMTA problem, set debug=1 in
/etc/opt/SUNWmail/imta/dispatcher.cnf. Also enable the diagnostic output for the slave program in the intranet channel. (From the IMTA Property Book double click on the relevant SMTP channel and go to the Diagnostics Output Section. Check the box for Enable diagnostic output for slave program.

Try to start the IMTA again, and look at the debug output in the tcp_smtp_server log files at /var/opt/SUNWmail/imta/log/tcp_local_slave*.