Re^2: Re^2: qmail

[Christos Ricudis]

Hello Linux-greek-users!

In <LINUX-USERS.GR> Linux-greek-users wrote:

 L> Exxx... to problima tou sendmail einai giati trexei san root kai
 L> afinei tis brwmies tou (ta mails) sto /var/spool/mail :) Kata 
 L> ta alla, ola ta programmata einai eualwta sto hacking. Oso twra 
 L> gia tin stoixeiwdi adynamia twn mono0eistikwn 0riskeiwn... paikse 

Oxi. To problhma toy sendmail einai oti trexei katw apo ena leitoyrgiko to
opoio mh mporwntas na kanei tipote parapanw, prokeimenoy na tow dwsei
priviledges gia kanei kapoia pragmata poy xreiazetai, toy dinei KAI priviledges
poy DEN xreiazetai. (o monos ousiastikos logos poy to sendmail exei root
priviledges einai gia na mporei na kanei bind to port 80). Sto /var/spool/mail
den afhnei tipota to sendmail, oi mail transport agents to afhnoun ekei. Sto
SVR4 to problhma "ly8hke" me to na spasoyn to sendmail se kommatia - me root
priviledges trexei mono o smtpd. Kai pali to 8ewrw lan8asmenh lysh, h swsth
einai h yposthriksh pollaplwn priviledges apo to underlying OS, etsi wste na
mporw anti na dwsw root priviledges sto sendmail, na toy dwsw to
PRIV_BIND_WELL_KNOWN_PORTS alla oxi p.x. to PRIV_DO_IOPL h to
PRIV_OVERRIDE_FILESYSTEM_PERMISSIONS. 

Christos Ricudis, ricudis at paiko.gr                              2:413/11.0.
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