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Date: Fri, 24 Apr 2015 00:48:57 +0200
From: Harald Becker <ralda@....de>
To: musl@...ts.openwall.com
CC: Rich Felker <dalias@...c.org>
Subject: Re: Still not possible to send mail to domain libc.org
On 24.04.2015 00:33, Rich Felker wrote:
> On Thu, Apr 23, 2015 at 11:55:30PM +0200, 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.
>
> Again there are no CNAMEs involved.
I think several authors use the term CNAME when they see a name return
like brightrain, which is not the sense of DNS CNAME :(
>> 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.
>
> Responses larger than 512 bytes are not supported over UDP and are
> rarely used. I saw some replies close to that long but none of them
> had the TC (truncation) bit set, so I don't think that's your issue
> either.
So what did you change, as it now works?
Harald
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