On Fri, 2005-02-18 at 11:35 -0500, David Cary Hart wrote: > On Fri, 2005-02-18 at 08:53 -0700, Craig White wrote: > > ---- > > for what it's worth, I had 1 mail server that rejected my mail because > > it originated from my smtp server that used a 'smart host' and it > > couldn't resolve my smtp server via reverse dns - which is the point of > > using a smart host. > > Consider a smart host the same thing as routing mail through your ISP. > Mail servers look at the client and the client's reverse pointer. This > has nothing to do with the sender (you). Many servers (including ours) > insists on a FQDN for the sender and HELO; That is sender@do-not- > reply.notld cannot send mail to our users nor can helo=<hello-world>. ---- not sure I understand a recent email that I sent to fedora-list headers - I have removed the 'return route stuff' to simplify this discussion. This is where they received my email Received: from int-mx1.corp.redhat.com (int-mx1.corp.redhat.com [172.16.52.254]) by listman.util.phx.redhat.com (8.12.11/8.12.10) with ESMTP id j1CA2Sa0017835 for <fedora-list@xxxxxxxxxxxxxxxxxxxxxxxxxxx>; Sat, 12 Feb 2005 05:02:28 -0500 Received: from mx3.redhat.com (mx3.redhat.com [172.16.48.32]) by int- mx1.corp.redhat.com (8.11.6/8.11.6) with ESMTP id j1CA2RO32357 for <fedora-list@xxxxxxxxxx>; Sat, 12 Feb 2005 05:02:27 -0500 Received: from fed1rmmtao05.cox.net (fed1rmmtao05.cox.net [68.230.241.34]) by mx3.redhat.com (8.12.11/8.12.11) with ESMTP id j1CA2Kil012761 for <fedora-list@xxxxxxxxxx>; Sat, 12 Feb 2005 05:02:20 -0500 Received: from linuxserver.azapple.com ([68.228.225.160]) by fed1rmmtao05.cox.net (InterMail vM.6.01.04.00 201-2131-117-20041022) with ESMTP id <20050212100213.FPOX11322.fed1rmmtao05.cox.net@xxxxxxxxxxxxxxxxxxxxxxx> for <fedora-list@xxxxxxxxxx>; Sat, 12 Feb 2005 05:02:13 -0500 Received: from lin-workstation.azapple.com (lin-workstation.azapple.com [192.168.2.10]) by linuxserver.azapple.com (8.12.11/8.12.11) with ESMTP id j1CA2Cm1013160 for <fedora-list@xxxxxxxxxx>; Sat, 12 Feb 2005 03:02:12 -0700 lin-workstation.azapple.com is the client - on dynamic ip space linuxserver.azapple.com is my server - also on dynamic ip space sendmail on linuxserver.azapple.com uses smtp.west.cox.net as 'smarthost' and as you can see by next hop up, fed1rmmtao05.cox.net has received it and forwarded it to mx3.redhat.com thus in this scenario, what you are terming the 'sender' in Red Hat's mail server case is indeed fed1rmmtao05.cox.net and the 'client' is lin- workstation.azapple.com - correct? and since fed1rmmtao05.cox.net is resolvable via dns, few problems are expected with this chain - correct? Craig
