Greetings all...
I have for many years lamented that received e-mails show the original
date/time from the SENDER, as this allows malicious senders (SPAMMERS)
to mess with these values to make messages appear in the far-flung
future (or distant past) in an attempt to make their messages stand out.
It was always just an annoyance for me (like the other day when I
couldn't seem to find this unread message in my inbox & it turned out to
be dated in 1970! SPAM, naturally, and I removed it without opening --
but the mere fact that I had to search and search to remove an
advertisement for enlargement pills is an annoyance).
But today, a client asked if there was anything I could do about this
same issue... and I said I'd look into it.... so here's my shot in the
dark...
Does anyone know of a method of replacing the DATE: field in the msg
header with the RECEIVED date/time?
My initial questions/thoughts on the matter include:
- Won't that break signatures? (NO, message headers are messed with
throughout the transit process. Neither PGP nor DKIM should break from this)
- Aren't you just supposed to ADD to the header, not modify it? (True,
but SpamAssassin inserts the SPAM flag into the subject... why would
this be different)
- Yes, but SA just adds to the Subject line -- you're proposing to
change an important data field...
That is just an Implementation detail - just insert something in
front of the "^Date:" line ... like changing it to "^SENDER-Date:"...
and then insert a proper "^Date:" with the data from the receiving
server... that should be fine!
- Comment: You'd want to do this only as a part of qmail-local so that
you only modify LOCALLY delivered messages
Looking forward to any suggestions...
Dan McAllister
--
IT4SOHO, LLC
PO Box 507
St. Petersburg, FL 33731-0507
CALL TOLL FREE:
877-IT4SOHO
We have support plans for QMail!
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