On Wed, Apr 07, 2004 at 08:52:31AM +0200, Marek D?browski wrote: > Hello > > I looking for rev dns patch for qmail (+ldap), but I can't find it. Do > you know how can I check revers dns for servers connecting to my MTA? >
What do you like to achive with that? qmail-smtpd does not have a reverse dns check but stuff like RETURNMXCHECK, SANITYCHECK, SENDERCHECK, RCPTCHECK and ~control/badmailfrom-unknown. Blocking mails just because there is no PTR RR for the IP will cause many support calls. A big ISP here in switzerland got that glorious idea and the gain was almost equal zero but they still suffer from the fuss that produced. Btw. most spammers do have PTR RR records. -- :wq Claudio
