{% endif %}
SYSLOG_IDENTIFIER = sudo
-\s*[_\w.-]+ : TTY=(unknown|console|(pts/|ttyp?|vc/)\d+) ; PWD=[^;]+ ; USER=[._\w-]+ ; COMMAND=.*
+\s*[._\w-]+ : TTY=(unknown|console|(pts/|ttyp?|vc/)\d+) ; PWD=[^;]+ ; USER=[._\w-]+ ; COMMAND=.*
+
+SYSLOG_IDENTIFIER = su
+\(to [._\w-]+\) [._\w-]+ on none
_SYSTEMD_UNIT = postfix@-.service
warning: hostname [^\s]+ does not resolve to address [\da-fA-F.:]+(: Name or service not known)?