Date: Fri, 29 Sep 2000 10:01:38 -0400 From: Jan Knepper <jan@smartsoft.cc> To: Jim Weeks <jim@siteplus.net> Cc: Artem Koutchine <matrix@ipform.ru>, Andy Wolf <Andy.Wolf@nextra.de>, James Wyatt <jwyatt@rwsystems.net>, Jan Knepper <jan@digitaldaemon.com>, freebsd-questions@FreeBSD.ORG, freebsd-isp@FreeBSD.ORG Subject: Re: DNS: having domain1.com and domain1.net point to the same IP. Message-ID: <39D4A0C2.2F93A24C@smartsoft.cc> References: <Pine.BSF.4.21.0009290850070.335-100000@veager.siteplus.net>
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Jim Weeks wrote: > On Fri, 29 Sep 2000, Artem Koutchine wrote: > > > From: "Jim Weeks" <jim@siteplus.net> > > > > > > On Fri, 29 Sep 2000, Andy Wolf wrote: > > > > > > > We use two A records now and therefor accept redundancy. The reverse > > lookup > > > > of course can only point to one of the labels. > > > > > > The general consensus throughout the industry seems to be that C names are > > > evil. > > > > > > I have never been bitten by just using A names. > > > > > > > I have. Revers lookup might fail and some secure smtp server and other > > daemons > > do not allow access if reverse lookup failes. For example: > > What type of smtp setup would fail because the reverse lookup name did not > match that of the virtual domain? > > Do you have an example of a daemon that would choke? No an example of a daemon that would choke, but UUnet didn't have my reverse-DNS setup so the reverse lookup's didn't work. For that reason I resend (this) messages, because I didn't see it appear on the list. Appearantly SMTP (as postfix) checks via a reverse lookup whether or not a host really exists. When it does not, it does not accept the message. Don't worry, be Kneppie! Jan -- Jan Knepper Smartsoft, LLC 88 Petersburg Road Petersburg, NJ 08270 U.S.A. http://www.smartsoft.cc/ http://www.mp3.com/pianoprincess Phone : 609-628-4260 FAX : 609-628-1267 FAX : 303-845-6415 http://www.fax4free.com/ Phone : 020-873-3837 http://www.xoip.nl/ (Dutch) FAX : 020-873-3837 http://www.xoip.nl/ (Dutch) In God we Trust -- all others must submit an X.509 certificate. -- Charles Forsythe <forsythe@alum.mit.edu> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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