From owner-freebsd-questions Sat Dec 28 6: 9:56 2002 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4A67237B401 for ; Sat, 28 Dec 2002 06:09:55 -0800 (PST) Received: from smtp.infracaninophile.co.uk (ns0.infracaninophile.co.uk [81.2.69.218]) by mx1.FreeBSD.org (Postfix) with ESMTP id 967CB43EC2 for ; Sat, 28 Dec 2002 06:09:50 -0800 (PST) (envelope-from m.seaman@infracaninophile.co.uk) Received: from happy-idiot-talk.infracaninophile.co.uk (localhost [IPv6:::1]) by smtp.infracaninophile.co.uk (8.12.6/8.12.6) with ESMTP id gBSE9f9Y045768 for ; Sat, 28 Dec 2002 14:09:41 GMT (envelope-from matthew@happy-idiot-talk.infracaninophile.co.uk) Received: (from matthew@localhost) by happy-idiot-talk.infracaninophile.co.uk (8.12.6/8.12.6/Submit) id gBSE9a5b045767 for freebsd-questions@FreeBSD.ORG; Sat, 28 Dec 2002 14:09:36 GMT Date: Sat, 28 Dec 2002 14:09:36 +0000 From: Matthew Seaman To: freebsd-questions@FreeBSD.ORG Subject: Re: What are the SMTP rules for sending mail to FreeBSD Message-ID: <20021228140936.GA45669@happy-idiot-talk.infracaninophi> Mail-Followup-To: Matthew Seaman , freebsd-questions@FreeBSD.ORG References: <3E0DACCB.5090402@quadtelecom.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3E0DACCB.5090402@quadtelecom.com> User-Agent: Mutt/1.5.1i X-Spam-Status: No, hits=-2.7 required=5.0 tests=IN_REP_TO,QUOTED_EMAIL_TEXT,REFERENCES,SPAM_PHRASE_03_05, USER_AGENT,USER_AGENT_MUTT version=2.43 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Sat, Dec 28, 2002 at 08:53:15AM -0500, Harry Tabak wrote: > Mail sent from my main server, gatehouse.quadtelecom.com (66.45.116.138) > gets rejected. > _450_Client_host_rejected:_cannot_find_your_hostname,_[66.45.116.138] > > What are the rules for sending mail!!!!! I'm not a spammer -- I've > never sent spam!!! Your rejection is very disconcerting. You are probably being rejected because the IP number of your machine doesn't have a PTR record for gatehouse.quadtelecom.com: happy-idiot-talk:~:% host 66.45.116.138 138.116.45.66.IN-ADDR.ARPA domain name pointer steelcityhosting.com happy-idiot-talk:~:% host gatehouse.quadtelecom.com gatehouse.quadtelecom.com has address 66.45.116.138 gatehouse.quadtelecom.com mail is handled (pri=5) by gatehouse.quadtelecom.com That makes it look like your machine is being used to send e-mails with forged headers. That's mostly a spammer trick, hence the rejection. Either arrange for your ISP to incorporate the correct PTR data or have them delegate your netblock to you or else configure your mail system forward all your e-mail via some sort of smart host provided by your ISP. Cheers, Matthew -- Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks Savill Way Marlow Tel: +44 1628 476614 Bucks., SL7 1TH UK To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message