From owner-freebsd-doc Mon Apr 8 7:38:42 2002 Delivered-To: freebsd-doc@freebsd.org Received: from mail.freebsdmall.com (www.freebsdmall.com [66.220.2.194]) by hub.freebsd.org (Postfix) with ESMTP id B349B37B400 for ; Mon, 8 Apr 2002 07:38:34 -0700 (PDT) Received: by mail.freebsdmall.com (Postfix, from userid 2135) id A3DA72E827; Mon, 8 Apr 2002 07:38:33 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by mail.freebsdmall.com (Postfix) with ESMTP id A143F2AA41; Mon, 8 Apr 2002 07:38:33 -0700 (PDT) Date: Mon, 8 Apr 2002 07:38:33 -0700 (PDT) From: Chern Lee X-X-Sender: To: Ceri Davies Cc: Subject: Re: RFC: Change to "why does my mail to FreeBSD.org bounce" FAQ In-Reply-To: <20020408074755.GA4830@submonkey.net> Message-ID: <20020408072228.F43602-100000@www.freebsdmall.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-doc@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org It's very early in the morning, so I'll try to add to this discussion as best as I can. hub.freebsd.org implements some of Postfix's stricter client checks for mail it receives. The hostname in the EHLO/HELO command must merely exist, it does not necessarily have to match the client's IP address. I've ran into on a few occasions, mailservers that have forward DNS but no reverse DNS entries. Clients/mailservers with this condition will be denied by hub.freebsd.org. hub.freebsd.org will reject: * HELO/EHLO command with bad syntax * HELO/EHLO not in FQDN form * HELO/EHLO hostname without DNS A or MX record * Client hostname is unknown (will not reverse resolve) * MAIL FROM domain without DNS A or MX record * MAIL FROM not in FQDN form Hopefully that sheds some more light :) - chern On Mon, 8 Apr 2002, Ceri Davies wrote: > On Sun, Apr 07, 2002 at 11:41:28AM -0700, Gary W. Swearingen wrote: > > Ceri Davies writes: > > > > > + Some mail user agents generate bad message IDs which will > > > + not be accepted. You will need to persuade your mail user > > > + agent to generate a valid message ID or else configure your > > > + mail transfer agent to rewrite them. > > > > The answer should also have: > > > > In the FreeBSD.org mailing list system, the definition of "valid" > > for the message ID and other mail headers is an arbitrary definition > > which is different than those found in IETF RFCs and which is subject to > > change without notice before or after the change. > > Well that's a matter of interpretation. > I'd say that using @localhost in your message ID is simply making yourself > far more likely to violate this piece of RFC2822 : > > The message identifier (msg-id) itself MUST be a globally unique > identifier for a message. The generator of the message identifier > MUST guarantee that the msg-id is unique. > > But then, as I said, that's just my interpretation. > > Ceri > > -- > get the cool shoe shine > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-doc" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-doc" in the body of the message