From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/7506 Path: news.gmane.org!not-for-mail From: Harald Becker Newsgroups: gmane.linux.lib.musl.general Subject: Re: Still not possible to send mail to domain libc.org Date: Fri, 24 Apr 2015 00:08:00 +0200 Message-ID: <55396D40.2050602@gmx.de> References: <55393C1F.6060900@gmx.de> <20150423195959.GH17573@brightrain.aerifal.cx> <553952B1.6090707@gmx.de> <20150423205226.GI17573@brightrain.aerifal.cx> <5539632C.3040403@gmx.de> <55396A52.8050904@gmx.de> Reply-To: musl@lists.openwall.com NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1429826901 30044 80.91.229.3 (23 Apr 2015 22:08:21 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 23 Apr 2015 22:08:21 +0000 (UTC) To: musl@lists.openwall.com Original-X-From: musl-return-7519-gllmg-musl=m.gmane.org@lists.openwall.com Fri Apr 24 00:08:20 2015 Return-path: Envelope-to: gllmg-musl@m.gmane.org Original-Received: from mother.openwall.net ([195.42.179.200]) by plane.gmane.org with smtp (Exim 4.69) (envelope-from ) id 1YlPI6-000548-AX for gllmg-musl@m.gmane.org; Fri, 24 Apr 2015 00:08:14 +0200 Original-Received: (qmail 30551 invoked by uid 550); 23 Apr 2015 22:08:12 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: Original-Received: (qmail 30529 invoked from network); 23 Apr 2015 22:08:12 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 In-Reply-To: <55396A52.8050904@gmx.de> X-Provags-ID: V03:K0:hPjWKG840fOMAB92ESkFmpXOcZS+CLrfIIzC9npInzHcexe21HA 0rC3/KztkpFc9EAtubmjnb/Urym0kVzGgf0kywPzEblfPtuyriy4mQ9ht5uN/pnupIhw6EX 8yCHXKk1mMayTGuxEixMdHmQ6w9//9tFZe+OmAWniKpVx0UrkkVMQXg02AX0S+aizlkPdIq musnGNV11uuhIb8evWA1w== X-UI-Out-Filterresults: notjunk:1; Xref: news.gmane.org gmane.linux.lib.musl.general:7506 Archived-At: On 23.04.2015 23:55, Harald Becker wrote: > Hi Rich, > > extending my search on qhe net I found the following: > > All of the senders experiencing the bounced messages mentioning cname > lookup failure appear to be running the qmail mail server software. > > Qmail, if not using a third party patch that was written in the late > 90’s, has an issue sending to domains whose name servers respond to DNS > queries of type “ANY” with more than 512 bytes of data; that is a bug in > qmail and the author has never fixed it because he wants you to use his > DNS server software which also eliminates the issue in a different way. > > Google’s name servers do respond to queries of type “ANY” with more than > 512 bytes of data, so when an unpatched qmail server tries to send an > email to a domain whose lowest cost MX record ends in .google.com, qmail > is going to do a DNS query of type ANY against one of google.com’s > authoritative name servers, get back more than it can correctly handle > and defer repeatedly until ultimately bouncing the message with that > cname lookup failure… Sorry I forgot to add the link: https://productforums.google.com/d/msg/apps/mIGTQVZiFxo/ULesU7hOo6wJ > > Harald >