For some reason I'm getting a lot of these in my log files everyday:
to=nobody@example.com, delay=2+20:00:28, xdelay=00:01:01, mailer=esmtp, pri=6271413, relay=example.com. [192.0.34.166], dsn=4.0.0, stat=Deferred: Connection timed out with example.com.
How can I figure out who is behind these attempted connections to
nobody@example.com . I'm guessing that this is a program that was not configured properly.