[linux] security problem

[Bohdan Spes]

Zdravim.

	V poslednom case mam problemy s mailami. Mam jeden server Sendmail 
8.11.2/8.11.2/SuSE Linux a defaultne mam relay len z tej masiny. Skusal som 
ododlat cez ten server mail a dostal som Relaying denied. IP name lookup 
failed. Takze sa mi zda, ze je to dobre. Lenze tvrdia mi, ze cez to presiel 
smap Napada vam nejaky sposob ?  Dalsi problem je tento: kolega igor dostal 
mail s takouto hlavickou:

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From: "VARTIK, Branislav" <brano na vartik.sk>
To: "'VARTIK, Branislav'" <brano na vartik.sk>
Subject: Pozdrav
Date: Thu, 16 Aug 2001 00:30:44 +0200
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Problem je ten, ze vidim odosielatel aj prijemca je ten isty clovek, tak ako 
sa to mohlo dostat k mojmu kolegovi, ked tam nevidim v hlavicke ziadnu jeho 
adresu ?

Ak viete, poradte.

Bohdan Spes