Date: Wed, 9 Apr 1997 21:27:52 -0700 (PDT) From: Doug White <dwhite@gdi.uoregon.edu> To: Adrian Carter <adrian@apic.net> Cc: questions@freeBSD.org Subject: Re: Weird Network Behaviour Message-ID: <Pine.BSF.3.96.970409212656.4997l-100000@localhost> In-Reply-To: <3.0.1.32.19970409142658.00792100@mail.apic.net>
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On Wed, 9 Apr 1997, Adrian Carter wrote: > Got a bit of a weird one here. We are an ISP running pretty much as a > FreeBSD house, with them being a mixture of 2.1.5's (only one machine, due > to the fact it is offsite and I havent had the time to go onsite and > upgrade) and 2.1.7's. > > In the last 4 days the machine running 2.1.5 has been sporadically > 'dropping data'. In that I mean, as an example, If youy try and send a > message via that machines SMTP port, communication works fine for the HELO, > MAIL FROM, and RCPT TO. The client then sends the DATA command, and > according to sendmail logs, the machine reports a 354 message and awaits > the data. However, the end-user program never see's the 354 message, and > eventually times out. If you use the same machine, with the same e-mail > message, and use a different SMTP host, it works fine. The machine(s) in question don't happen to be living behind any Xylogics equipment, do they? Try disabling tcp_extensions in /etc/sysconfig. Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major
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