From owner-freebsd-questions@FreeBSD.ORG Fri Feb 29 08:14:20 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2B2BE106566B for ; Fri, 29 Feb 2008 08:14:20 +0000 (UTC) (envelope-from tedm@toybox.placo.com) Received: from mail.freebsd-corp-net-guide.com (mail.freebsd-corp-net-guide.com [65.75.192.90]) by mx1.freebsd.org (Postfix) with ESMTP id E00208FC16 for ; Fri, 29 Feb 2008 08:14:19 +0000 (UTC) (envelope-from tedm@toybox.placo.com) Received: from TEDSDSK (nat-rtr.freebsd-corp-net-guide.com [65.75.197.130]) by mail.freebsd-corp-net-guide.com (8.13.8/8.13.8) with SMTP id m1T8EEfB045867; Fri, 29 Feb 2008 00:14:15 -0800 (PST) (envelope-from tedm@toybox.placo.com) From: "Ted Mittelstaedt" To: "Wojciech Puchar" , "Zbigniew Szalbot" Date: Fri, 29 Feb 2008 00:15:16 -0800 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1914 In-Reply-To: <20080228123859.R33115@wojtek.tensor.gdynia.pl> Importance: Normal X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-3.0 (mail.freebsd-corp-net-guide.com [65.75.192.90]); Fri, 29 Feb 2008 00:14:16 -0800 (PST) Cc: freebsd-questions@freebsd.org, cuongvt Subject: RE: relay through gmail X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 29 Feb 2008 08:14:20 -0000 > -----Original Message----- > From: owner-freebsd-questions@freebsd.org > [mailto:owner-freebsd-questions@freebsd.org]On Behalf Of Wojciech Puchar > Sent: Thursday, February 28, 2008 3:40 AM > To: Zbigniew Szalbot > Cc: freebsd-questions@freebsd.org; cuongvt > Subject: Re: relay through gmail > > > > > > With dyndns he won't be able to deliver to many mailservers out there. > > while not RFC-mandatory, a static IP address and rDNS are a must now > > in most cases. > > rDNS is a must? strange but i don't have this in lot of places, and 2 > places with dyndns-like solution (exactly like dyndns.com but done by my > other machine) - both works without problems. > > you are definitely not right. No, he IS right. The issue is that while the mail RFC's don't require rDNS, there are a -few- rather stupid anti-spam filters out there that do. As long as you (or one of your users) is not e-mailing to someone on one of these mailservers your fine. But if you are, your screwed. We often get this kind of complaint call from customers who have setup this kind of deal and -1- person in their organization has -1- coorespondent they keep getting their mail rejected from. When we tell them they have to pay their ISP more money for a static IP address, whether they do it or not is usually dependent on how important the particular employee is, who is being screwed over. Ted