Date: Wed, 08 Nov 2000 17:53:57 +0100 From: Len Conrad <lconrad@Go2France.com> To: freebsd-questions@freebsd.org Subject: Re: MX-DNS-telnet sanity check Message-ID: <5.0.0.25.0.20001108175249.025b6eb0@mail.Go2France.com> In-Reply-To: <Pine.BSF.4.21.0011081130350.66705-100000@mail.bnetmd.net>
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At 11:48 08/11/00 -0500, you wrote: >Hi all, more generic than FreeBSD, but hope somecan confirm/deny: > >We have a domain hosted on us, with an MX record pointing to another >ISP. Mail worked just fine until this Monday morning. At that time, mail >delivery through the MX'ed ISP went intermittent. By that, some mail is >delivered OK, some mail is not. > >"Other ISP" are claiming that our DNS is set up incorrectly. >domain.com. IN MX 0 mail.otherisp.net. >--seems pretty straightforward to us, and has worked for over a year. > >The basis of their claim is their statement that running: > >bash# telnet domain.com 25 > >-- does not connect to their mail server, the target of the MX entry, but >rather to the server where domain.com is housed. This is supposed to be >proof that our DNS MX entry is wrong. false proof >Personally, I didn't know that specifying port 25 on a telnet connection >would cause telnet to do an MX lookup if won't, of course. >and then connect to that address >rather than the address for "domain.com". Am I missing this or are they >blowing the smoke I think they are? the latter. telnet mailhost 25 ... is the way to test it. Len To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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