sudo tail -f /var/log/mail.err
May  3 17:23:45 tessa postfix/smtpd[24169]: fatal: missing ']' character after "["
May  3 17:23:45 tessa postfix/smtpd[24171]: fatal: missing ']' character after "["
May  3 17:23:45 tessa postfix/smtpd[24172]: fatal: missing ']' character after "["
May  3 17:23:45 tessa postfix/smtpd[24173]: fatal: missing ']' character after "["
May  3 17:23:45 tessa postfix/smtpd[24174]: fatal: missing ']' character after "["
May  3 17:50:28 tessa postfix/smtpd[28058]: fatal: non-null host address bits in "192.168.1.0/8", perhaps you should use "192.0.0.0/8" instead
May  3 17:50:28 tessa postfix/smtpd[28061]: fatal: non-null host address bits in "192.168.1.0/8", perhaps you should use "192.0.0.0/8" instead
May  3 17:50:28 tessa postfix/smtpd[28062]: fatal: non-null host address bits in "192.168.1.0/8", perhaps you should use "192.0.0.0/8" instead
May  3 17:50:28 tessa postfix/smtpd[28063]: fatal: non-null host address bits in "192.168.1.0/8", perhaps you should use "192.0.0.0/8" instead
May  3 17:50:28 tessa postfix/smtpd[28064]: fatal: non-null host address bits in "192.168.1.0/8", perhaps you should use "192.0.0.0/8" instead

jeeves@tessa:/etc/postfix$ sudo tail -f /var/log/mail.log
May  4 21:00:03 tessa postfix/local[23745]: 9718F634157: to=<root@mail.moseley.ca>, relay=local, delay=0.02, delays=0.02/0/0/0, dsn=2.0.0, status=sent (forwarded as 9BB2F634151)
May  4 21:00:03 tessa postfix/qmgr[28271]: 9BB2F634151: from=<>, size=2843, nrcpt=1 (queue active)
May  4 21:00:03 tessa postfix/qmgr[28271]: 9718F634157: removed
May  4 21:00:03 tessa postfix/smtpd[23747]: warning: 192.168.1.1: hostname Farm-Router verification failed: Name or service not known
May  4 21:00:03 tessa postfix/smtpd[23747]: connect from unknown[192.168.1.1]
May  4 21:00:03 tessa postfix/smtp[23746]: warning: host moseley.ca[216.75.169.29]:25 greeted me with my own hostname tessa
May  4 21:00:03 tessa postfix/smtp[23746]: warning: host moseley.ca[216.75.169.29]:25 replied to HELO/EHLO with my own hostname tessa
May  4 21:00:03 tessa postfix/smtp[23746]: 9BB2F634151: to=<postmaster@moseley.ca>, orig_to=<root@mail.moseley.ca>, relay=moseley.ca[216.75.169.29]:25, delay=0.24, delays=0/0/0.23/0, dsn=5.4.6, status=bounced (mail for moseley.ca loops back to myself)
May  4 21:00:03 tessa postfix/smtpd[23747]: disconnect from unknown[192.168.1.1]
May  4 21:00:03 tessa postfix/qmgr[28271]: 9BB2F634151: removed