On Wed, 23 May 2007, Scott Kitterman wrote:
| or if there are syntax errors in the explanation string, then
| proceed as if no exp modifier was given.
So a bad exp is a bad exp, but it doesn't raise an error, you just ignore the
exp.
Unless I misunderstood what Frank was after.
You misunderstood.
"syntax errors in the explanation string" means *after* fetching it from
the domain. E.g.
example.com IN TXT "v=spf1 exp=foo.example.com -all"
foo.example.com IN TXT "%{q}"
'q' is not a valid macro letter, so the explanation string has a syntax
error and should be ignored (by all three options).
However,
example2.com IN TXT "v=spf1 exp= -all"
option 1 ignored (ignore empty domain spec)
option 2 permerror (doesn't match domain-spec)
option 3 permerror (doesn't match domain-spec)
and
example3.com IN TXT "v=spf1 exp=%h -all"
HELO ''
option 1 ignored (target-name is not a valid domain name)
option 2 ignored (target-name is not a valid domain name)
option 2 ignored (target-name is empty)
Options 2 and 3 should have the same result, but differ in whether
empty target-name is explicitly ignored.
--
Stuart D. Gathman <stuart(_at_)bmsi(_dot_)com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
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