Tom Smith writes:
Is it safe to assume that most MTAs will give up trying after four or
five days if a message is still undeliverable, even if it's getting a
temporary error? (The spam I referred to is dated in 2003, but I don't
want to set a date limit that old--perhaps a week or two.)
Like I said before, it's sort of safe, but you might also want to consider
rewriting the dates of the e-mails which are sort of strange but not strange
enough for you to block... that way the spam with bad dates won't go to the
top of the users e-mailprograms with a less than perfect sorting algorithm.
(Something I'm getting a touch of right now as I've had to urgently move to
a solution where my date-rewriter is no longer available and the mailprogram
has a lousy sorting algorithm...)
/Tony
