ietf-smtp
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Re: BCP for handling DNS SERVFAIL results

2005-11-27 01:46:24
On Sun, 27 Nov 2005 02:45:18 EST, Hector Santos said:

But if you search the net, you will find discussions on this SMTP client
consideration.   I can only suggest the historical reason is that there were
many DNS servers producing the erroneous SERVFAIL failures

I can only suggest that in an environment were a lot of bozos were unable to
properly set up their DNS, it's not at all surprising to find that other bozos
were recommending totally bogus methods of working around the ineptitute of
the first set of bozos.

Or were you thinking of this from Sendmail:

        New ResolverOptions setting: WorkAroundBrokenAAAA.  When
                attempting to canonify a hostname, some broken nameservers
                will return SERVFAIL (a temporary failure) on T_AAAA (IPv6)
                lookups.  If you want to excuse this behavior, use this new
                flag.

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