[linux] NOOP attack?

[Miroslav Vasko]

Ahojte,

vie mi niekto vysvetlit, co je toto? pozro, nie som spravca
iba (l)user.

Vdaka,
Miro.

Active System Attack Alerts
=-=-=-=-=-=-=-=-=-=-=-=-=-=
Oct 14 10:23:43 iesba sendmail[30411]: NOQUEUE: smtp2.post.cz 
[nn.nn.nn.nn]: NOOP attack?

Security Violations
=-=-=-=-=-=-=-=-=-=
Oct 14 10:23:43 iesba sendmail[30411]: NOQUEUE: smtp2.post.cz 
[nn.nn.nn.nn]: NOOP attack?