Date: Wed, 3 Feb 1999 15:38:17 +0300 From: Anand Buddhdev <arb@anand.org> To: Matthias Apitz <guru@Sisis.de> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: sendmail and MSOE clients Message-ID: <19990203153817.A9863@anand.org> In-Reply-To: <19990203090643.12564@sisis.de>; from Matthias Apitz on Wed, Feb 03, 1999 at 09:06:43AM %2B0100 References: <19990203090643.12564@sisis.de>
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On Wed, Feb 03, 1999 at 09:06:43AM +0100, Matthias Apitz wrote: I'm not an expert, but it seems like the M$ client is trying to use pipelining, which is where the client can simply keep sending out commands without waiting for responses. Pipelining is an ESMTP feature supported by some of the newer MTA's like qmail and exim. However, a client cannot assume that the server supports pipelining unless the server says so by returning a 250-PIPELINING along with the other codes in response to an EHLO. I suppose MSOE is being stupid here, as is usual with M$ junk. > Our central SMPT / POP3 server in our company is running > FreeBSD 2.2.7-RELEASE and sendmail(8). We installed on some > Win95 boxes a new MSOE version (don't blame me for that :-)). > Now the clients can't deliver mail using "SMTP" (in real they're not > using SMTP but ESMTP). I checked it with tcpdump(8) and all is > fine with the connection until the client says "EHLO....": > > 17:49:36.535244 10.0.1.15.1118 > 193.31.10.38.25: P 1:19(18) ack 87 win 8674 (DF) > 4500 003a ed3a 4000 1e06 992f 0a00 010f > c11f 0a26 045e 0019 00e5 455c f489 274f > 5018 21e2 604e 0000 4548 4c4f 206e 732e > 7369 7369 732e 6465 0d0a -- Anand System Administrator Africa Online Ltd http://www.anand.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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