:::. Sendmail & WorkAroundBrokenAAAA.

[Mikhail Goriachev]

Dan Busarow wrote:
> On Wednesday, July 19, 2006, at 01:09  AM, Mikhail Goriachev wrote:
> 
>> Doug Hardie wrote:
>>> That option has worked quite well for me.  However, there may be
>>> something unusual with the DNS for that domain.  You will probably
>>> need to provide some specifics on the domain so we can see what DNS
>>> is returning.
>>>
>>
>> Thanks for looking into this. I just realised that the domain in
>> question got fixed overnight after notifying the sysadmin. I guess this
>> is a good thing, yet I'm left puzzled with the difference between
>> confBIND_OPTS option and compiled INET6 support.
> 
> WorkAroundBrokenAAAA does not disable IPv6 lookups, it simply changes 
> the behaviour  when receiving SERVFAIL during an IPv6 lookup.


Thanks for your input Dan.

This was exactly my problem. I was getting SERVFAIL and the
WorkAroundBrokenAAAA wasn't doing its job despite its purpose to
overcome broken DNS responses. Hence, I decided to recompile sendmail
without INET6 support and it worked.


>  From the sendmail ops manual
> 
>    Use “WorkAroundBrokenAAAA” when faced with a broken nameserver that
>    returns SERVFAIL (a temporary failure) on T_AAAA (IPv6) lookups 
> during hostname
>    canonification.
> 
> Dan



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