Mar  6 23:14:54 jimsun auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=jseymour rhost=109.237.103.13  user=jseymour
# A log line with a missing IP addr
Mar  6 23:14:54 jimsun auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=jseymour rhost=xyz
Mar  6 15:42:42 jimsun postfix/smtpd[29181]: warning: Connection rate limit exceeded: 6 from unknown[61.190.160.178] for service smtp
Mar  6 16:43:15 jimsun postfix/submission/smtpd[30936]: warning: Connection rate limit exceeded: 6 from unknown[109.237.103.41] for service submission
Mar  6 16:43:15 jimsun postfix/submission/smtpd[30936]: warning: Connection rate limit exceeded: 6 from unknown[0000:0000:0000:0000:0000:0000:0000:0000] for service submission
# The next test log line has an invalid (too long) IPv6 addr, which *should* result in an error
Mar  6 16:43:15 jimsun postfix/submission/smtpd[30936]: warning: Connection rate limit exceeded: 6 from unknown[0000:0000:0000:0000:0000:0000:0000:00000] for service submission
Mar  6 16:43:15 jimsun abcde/submission/smtpd[30936]: warning: Connection rate limit exceeded: 6 from unknown[0000:0000:0000:0000:0000:0000:0000:0000] for service submission
Mar  6 16:43:15 jimsun postmap/submission/smtpd[30936]: warning: Connection rate limit exceeded: 6 from unknown[0000:0000:0000:0000:0000:0000:0000:0000] for service submission
Mar  6 16:43:15 jimsun zebra/submission/smtpd[30936]: warning: Connection rate limit exceeded: 6 from unknown[0000:0000:0000:0000:0000:0000:0000:0000] for service submission
Mar  6 15:42:42 jimsun postfix/smtpd[29181]: warning: Connection rate limit exceeded: 6 from host-name.example.com[61.190.160.178] for service smtp
Mar  6 16:43:15 jimsun whiskey/submission/smtpd[30936]: warning: Connection rate limit exceeded: 6 from unknown[0000:0000:0000:0000:0000:0000:0000:0000] for service submission
