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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.rmit.EDU.AU!goanna.cs.rmit.EDU.AU!munnari.oz.au!hpg30a.csc.cuhk.hk!cuhknntp!news.uoregon.edu!usenet.eel.ufl.edu!news.mathworks.com!newshost.marcam.com!usc!howland.reston.ans.net!Germany.EU.net!Dortmund.Germany.EU.net!nntp.gmd.de!stern.fokus.gmd.de!zib-berlin.de!irz401!uriah.heep!not-for-mail From: j@uriah.heep.sax.de (J Wunsch) Newsgroups: comp.mail.sendmail,comp.unix.bsd.freebsd.misc Subject: Re: Please Help: Name server timeouts from sendmail Date: 10 Oct 1995 23:10:18 +0100 Organization: Private FreeBSD site, Dresden. Lines: 17 Message-ID: <45er0a$5l9@uriah.heep.sax.de> References: <451uoc$4o5@agate.berkeley.edu> <456tb1$61k@uriah.heep.sax.de> <45carv$a2h@agate.berkeley.edu> NNTP-Posting-Host: uriah.heep.sax.de Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Keywords: sendmail bind named dns freebsd firewall timeout queue smart host Xref: euryale.cc.adfa.oz.au comp.mail.sendmail:20907 comp.unix.bsd.freebsd.misc:7073 Forest Edward Wilkinson <forest@soda.CSUA.Berkeley.EDU> wrote: >Also, if the libc resolver is used anyway, why does sendmail talk >directly to DNS by default? Does it need to do so in order to find MX >records? If that's the case, am I losing MX functionality by specifying >"nodns"? Sendmail by default tries to DNS lookup each and every single addressee, in order to rewrite all destination addresses into their "canonical" form, i.e. resolving CNAME records to their actual value. I'm not entirely sure about "nodns"; it's related to MX handling. Perhaps somebody in the sendmail group has that part handy. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)