On 11/19/10 4:30 PM, Matt Garretson wrote:
ah, not if you have dns issues. if you have dns issues, spf and/or dkim
> will fail and legit email will not pass!
True, perhaps, but a*lot* of things will stop working if you have DNS
issues.:)
with SPF, it could be the senders dns servers, or if they use includes,
the dns servers for that side, so, its dangerous to add +50 points, say,
and then use spf/dkim or auth to whitelist.
lots of complicated rules, mostly that I find I have to manually add,
then run against local corpus to make sure it doesn't break something.
clients complain of course, if you miss one spam, and complain, of
course if you block one legit email.
--
Michael Scheidell, CTO
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