root@dionis:/etc# tail -f /var/log/mail.log | grep mail
Jun 16 17:00:09 dionis postfix/smtp[21446]: 2E48C1965EF: to=<www-data@ternopiltele.com>, orig_to=<www-data>, relay=ASPMX.L.GOOGLE.com[74.125.43.27]:25, delay=4.2, delays=0.03/0.25/0.59/3.3, dsn=5.1.1, status=bounced (host ASPMX.L.GOOGLE.com[74.125.43.27] said: 550-5.1.1 The email account that you tried to reach does not exist. Please try 550-5.1.1 double-checking the recipient's email address for typos or 550-5.1.1 unnecessary spaces. Learn more at 550 5.1.1
http://mail.google.com/support/bin/answer.py?answer=6596 z1si6131646fam.172 (in reply to RCPT TO command))
Jun 16 17:00:13 dionis postfix/smtp[21438]: 73C181965EC: to=<www-data@ternopiltele.com>, relay=ASPMX.L.GOOGLE.com[74.125.43.27]:25, delay=4.4, delays=0.05/0.01/0.41/3.9, dsn=5.1.1, status=bounced (host ASPMX.L.GOOGLE.com[74.125.43.27] said: 550-5.1.1 The email account that you tried to reach does not exist. Please try 550-5.1.1 double-checking the recipient's email address for typos or 550-5.1.1 unnecessary spaces. Learn more at 550 5.1.1
http://mail.google.com/support/bin/answer.py?answer=6596 t1si9119029faa.46 (in reply to RCPT TO command))