^\w{3} [ :0-9]{11} [._[:alnum:]-]+ (imap|pop3)-login: Login: [.[:alnum:]@-]+ \[(::ffff:)?[:0-9a-f.]+\]$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ (dovecot: )?(imap|pop3)-login: Disconnected \[(::ffff:)?[:0-9a-f.]+\]$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ (dovecot: )?(imap|pop3)\([^[:space:]]+\): File isn't in mbox format: [^[:space:]]+$
# dovecot 1.0
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ dovecot: (imap|pop3)-login: Login: user=<[.[:alnum:]@-]+>, method=(PLAIN|LOGIN|(CRAM|DIGEST)-MD5), rip=(::ffff:)?[:.[:digit:]]+, lip=(::ffff:)?[:0-9a-f.]+(, TLS)?$
