Date: Mon, 18 Nov 1996 09:30:23 -0800 (PST) From: Mark Diekhans <markd@Grizzly.COM> To: marcs@znep.com, rls@mail.id.net, roberto@keltia.freenix.fr, freebsd-hackers@freebsd.org Subject: Re: BoS: Exploit for sendmail smtpd bug (ver. 8.7-8.8.2). Message-ID: <199611181730.JAA01379@osprey.grizzly.com> In-Reply-To: <Pine.BSF.3.95.961118082418.4525C-100000@alive.ampr.ab.ca> (message from Marc Slemko on Mon, 18 Nov 1996 08:34:12 -0700 (MST))
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>[moved to -hackers from security. It started with a discussion of >sendmail with uucp; I stated that sendmail still tries to use DNS no >matter how you configure it and you have to recompile it to make it stop.] > >On Mon, 18 Nov 1996, Robert Shady wrote: > >> > Incorrect. It RUNS without DNS but still TRIES to use it. If you really >> > don't have IP connectivity, then difference doesn't matter because it >> > still works when the lookup fails, however it still does try and the >> > difference does matter if you have partial IP connectivity. I have a >> > system setup with nocanonify and all the other config file tweaks I know >> > of, and it still tries to use DNS as a tcpdump shows quite clearly. This >> > system is running 8.7.5, so things may have been changed in more recent >> > versions but I can't say for sure; if this has changed in more recent >> > versions, please let me know. >> > >> > I _think_ the define that needs to be set to 0 is NAMED_BIND, but don't >> > recall for sure. This has been gone over before on the lists. I disabled the use of DNS by sendmail by adding the file /etc/service.switch containing the line: hosts files
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