Date: Mon, 17 Jul 2006 11:46:17 -0400 From: Bill Vermillion <bv@wjv.com> To: mike <mike@coloradosurf.com> Cc: freebsd-isp@freebsd.org, Bas Hendriks <bas@cybox.nl> Subject: Re: Sendmail: Deferred: Name server: xxx.xxx.xxx: host name lookup failure Message-ID: <20060717154617.GA71352@wjv.com> In-Reply-To: <20060717153342.GA45037@coloradosurf.com> References: <44BB9EFE.8040409@cybox.nl> <20060717153342.GA45037@coloradosurf.com>
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At Mon, Jul 17, 2006 at 09:33 , our malformed and occasionally flatulent friend mike spewed forth this fount of brain juice: > To add on... > I was using sendmail/mimedefang/clamav on freebsd6.0 (w/ probably > 8.13.4 before the patch) and got the same issue. It only seemed > to have the problem w/ my local domain. I resolved it by running > bind on the local server w/ records for my local domain and having > forwarders point to my normal internal nameservers (M$). Before > switching my resolv.conf to point to localhost, it resolved all > domains correctly (via dig), but I kept getting those same errors > from sendmail. I think even putting it in /etc/hosts didn't work. > Anyhow, the workaround came through and I haven't looked back, > but it sure would be nice to understand this one better. It seems > googling brought up some stuff w/ sendmail not playing nice w/ M$ > nameservers (or switch these around if you prefer to lay > appropriate blame) not working in certain instances but I forget > the details. > This may or may not be related. Speaking of 'not playing well with MS' I had a problem with that eariler this year on a Linux machine I support that was updated. I could send mail anywhere EXCEPT to machines running Miscrosoft exchange. I kept getting a name not being able to resovle [or similar] in the bounced mail from the MS machines. I contacted the HW/SW provider who has a lot of clients on our mail machines [not the problem machine] and asked him to check the logs at their machine, which also bounced messages. Of course as I've seen with many MS systems "We don't have logs - they take up too much space" After checking and rechecing it turns out the machine name got added with a trailing dot in the sendmail.cf when it was set up with SuSE's interface. I just toss this out in case someone sees something similar - coonections to all except MS machines working. Bill -- Bill Vermillion - bv @ wjv . com
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