Date: Wed, 22 May 96 13:30 PDT From: pete@pelican.altadena.net (Pete Carah) To: isp@freebsd.org Subject: Re: sendmail read errors/timeouts etc. Message-ID: <m0uMKYP-0000RhC@pelican.altadena.net> In-Reply-To: <c=US%a=_%p=Microsoft%l=DABONE-960519220510Z-13984@yuri.microsoft.com>
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In article <c=US%a=_%p=Microsoft%l=DABONE-960519220510Z-13984@yuri.microsoft.com> you write: X.400 - booooo! >i have not discovered anything in common among the sites i'm having >trouble with (other than the fact that my box is having trouble with all >of them - hmm maybe that should tell me something %^) >i'm surprised that with all the folks that've had problems with this in >the various versions of freebsd over the last year that nobody really >nailed it down. i was gonna search the netbsd list archives but they >aren't as easy to get at as the freebsd archives are (no smurfy html >form - gotta go get 'em and grep through 'em) - i thought it'd be >interesting to find out if the netbsd'ers have experienced the same >difficulties. oh well, that'll be that bottom of the barrel strategy. Well, I have seen some systems (both Sun's and SGI's out of the box) that will send mail directly to a host if it has an A record even if there is an MX for the host (which is *supposed* to take precedence if present). I know that the OI line is part of the fix but don't know all. That can easily cause problems if the destination's nameserver is a messed-up firewall configuration that advertises A records for internal (unreachable) hosts (which is *very* common; I've helped several sites straighten this one out on the nameserver end). O'Reilly can come to the rescue here (at least if you can lift the sendmail book :-)) My gateway systems all run smail 3.1 which is *much* easier to configure, but we still need good sendmail.cf's (the FreeBSD default seems to work much better than both Sun's and SGI's defaults; the SGI default will often result in sendmail hitting the per-user process limit, at least in 4.0.5 and 5.2. At least Sun's default will *usually* send mail successfully even if it is usually unreplyable outside your own domain (uses @nodename instead of @fqdn, at least in 2.4 and 2.5, even to external destinations).) -- Pete
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