messages log file - su

[Andrew Galdes]

Hello all,

I have found something interesting in a server log. This server is a
proxy/mail gateway server. The logs show the following:

Any ideas what's going on?

Oct 29 19:15:35 mailsrv su: (to nobody) root on none
Oct 29 19:15:35 mailsrv su: (to nobody) root on none
Oct 29 19:15:35 mailsrv su: (to nobody) root on none
Oct 29 19:15:35 mailsrv su: (to nobody) root on none
Oct 29 19:15:35 mailsrv su: (to nobody) root on none
...
Oct 31 10:00:29 mailsrv su: (to nobody) root on none
Oct 31 10:00:29 mailsrv su: (to nobody) root on none
Oct 31 10:00:29 mailsrv su: (to nobody) root on none
...
Nov  5 11:00:28 mailsrv su: (to nobody) root on none
Nov  5 11:00:28 mailsrv su: (to nobody) root on none
Nov  5 11:00:28 mailsrv su: (to nobody) root on none
Nov  5 11:00:28 mailsrv su: (to nobody) root on none
Nov  5 11:00:28 mailsrv su: (to nobody) root on none

Cheers,
-Andrew