strange syslog messages

[honeymak]

Mar 3 05:06:18 mail -- MARK --
Mar 3 05:26:18 mail -- MARK --
Mar 3 05:46:18 mail -- MARK --
Mar 3 06:06:18 mail -- MARK --


/var/log/messages
syslog-ng

bash has bash-logger USE flag defined

hi guys.......i have been getting msgs like the above for many times.......
where this line comes from?

_________________
hackers - make sth real
academics - read sth said to be real

[few]

https://forums.gentoo.org/viewtopic-t-668474-highlight-mark.html

[desultory]

Moved from Other Things Gentoo to Duplicate Threads, refer to topic "Strange `--MARK--`", in addition to the topic linked to by few.