https://issues.apache.org/SpamAssassin/show_bug.cgi?id=6338

--- Comment #6 from Mark Martinec <[email protected]> 2010-03-01 19:50:02 
UTC ---
Now that I think of it, even the current (3.2, 3.3) code relies on a query
section of a reply packet matching exactly the query packet. This happens
to work on all mainstream DNS servers, but there is no guarantee for this
in a form of a RFC requirement.  In essence, we are already depending on
poor-man's form of a dns0x20, just without any additional entropy.

The 'dns_options dns0x20' could just as well default to true, without
breaking anything that isn't already broken.

Does anybody feel we need to lift the requirement for an exact (case-for-case)
match when dns0x20 option is NOT enabled? Some poor soul on a cheap home
router/firewall/dns-server may be affected by this without knowing why
his SA DNS queries sometimes fail.

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