At 10:44 PM +0200 2003/09/12, Hein Roehrig wrote:
What about the other ports? I would be particularly curious about BCP
for ports 465 (ssmtp, SSL-wrapped SMTP) and 587 (submission, often
used for plain-text SMTP with an immediate STARTTLS required).
Can a case be made for spam reduction by blocking the ports for
outgoing connections? Are there many systems around that accept
incoming mail on these ports?
I believe that this is something that should definitely be
addressed in a BCP. However, I do not know if this is something that
is already covered by an existing BCP -- I'll have to do some
searching.
--
Brad Knowles, <brad(_dot_)knowles(_at_)skynet(_dot_)be>
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
-Benjamin Franklin, Historical Review of Pennsylvania.
GCS/IT d+(-) s:+(++)>: a C++(+++)$ UMBSHI++++$ P+>++ L+ !E-(---) W+++(--) N+
!w--- O- M++ V PS++(+++) PE- Y+(++) PGP>+++ t+(+++) 5++(+++) X++(+++) R+(+++)
tv+(+++) b+(++++) DI+(++++) D+(++) G+(++++) e++>++++ h--- r---(+++)* z(+++)
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