CNAME problems

[Murray Walker]

On Fri, 2 Jul 1999, shermon wrote:

> Hi, I too have Qmail and have been getting massive amounts of bounced mail coming from mainly, 
> aol.com. How did you resolve this problem, or did you switch to sendmail?
> Thanks,
> 
> -Shermon

I don't use qmail at this site, rather sendmail, but I was getting
complaints from users that they weren't getting mail from friends who were
using ISP's that used qmail. 

The only definite solution is to follow the qmail rule which states that
dns ANY queries should return less than 512 bytes. I took out some TXT
records from our dns that were getting returned with the query. I think
that may have solved the problem - although I'm not entirely convinced
yet. 

In the meantime if you look at www.qmail.org you'll find out that there is
supposedly a patch for qmail which solves the 512 byte limit problem.

It appears that AOL was the main reason qmail was forced into fixing their
software to cope with > 512 byte query replies. I don't think anybody
could send mail to AOL using qmail at one point.

Good luck,

Murray.
-------------
Murray Walker
Computing Officer, Centre for Speech Technology Research,
University of Edinburgh, 80 South Bridge, Edinburgh, EH1 1HN,
Scotland, U.K.

e-mail: maw at cstr.ed.ac.uk
Tel: 0131 650 2804