warning: hostname [^\s]+ does not resolve to address [\da-fA-F.:]+(: Name or service not known)?
warning: [._\w-]+\[[\da-fA-F.:]+\]: SASL LOGIN authentication failed: [._\w-]+
warning: non-SMTP command from \w+\[[\da-fA-F.:]+\]: .*
+warning: TLS library problem: error:[0-9A-F]+:SSL routines:\w+:(no shared cipher|decryption failed or bad record mac):[\w./]+:\d+:
+
+_SYSTEMD_UNIT = dovecot.service
+auth: Warning: auth client \d+ disconnected with \d+ pending requests: (EOF|Connection reset by peer)
SYSLOG_IDENTIFIER = sshd
error: Received disconnect from [\da-fA-F.:]+ port \d+:\d+: .*
-error: maximum authentication attempts exceeded for invalid user \w+ from [\da-fA-F.:]+ port \d+ ssh2( \[preauth\])?
+error: maximum authentication attempts exceeded for (invalid user \w*|\w+) from [\da-fA-F.:]+ port \d+ ssh2( \[preauth\])?
_SYSTEMD_UNIT = bind9.service
client [\da-fA-F.:]+#\d+ \([\w.-]+\): (zone transfer '[\w.-]+/AXFR/IN' denied|message parsing failed: (bad compression pointer|bad label type))
_SYSTEMD_UNIT = opendkim.service
-[A-Z0-9]+: bad signature data
+[A-Z0-9]+: (bad signature data|failed to parse authentication-results: header field)