Is it possible to convince my i-mode phone to put something other than my
"@docomo.ne.jp" address in the From: line of the e-mail?
Now that I'm up to five or six spam messages per day on my docomo phone,
I'd like to do something about it. I run my own mail server, so I can
just set up keitai@cynic.net or whatever as my address, and then do
appropriate filtering. (Probably block or /dev/null really obvious spam,
send dubious ones to my regular mailbox, and forward the obviously good
stuff to my phone.)
Certain characteristics of how the Docomo blocking works work very well
for this application. They block based on the envelope sender, but the
phones (or at least my P209i) display the From: line. So I can block
all but a specific (secret) envelope sender from sending to my phone,
but so long as my filter preserves the From: line, the incoming mail
looks completely normal, and can be replied to with the "Reply" button.
(This is bad news, by the way, for those trying to use the feature that
blocks up to ten individual addresses. First of all, you don't even know
the address to block unless the From: line and the envelope sender are
the same. Second, spammers could just use random envelope senders for
their mailings; they don't care if they don't get bounces. Or they might
just use <>; can that envelope sender even be blocked?)
The only hitch here is that when I send mail from my phone, it's going
to have an address in the From: line that's guaranteed to bounce. I can
think of some ways to fix this (e.g., send everything back through my
e-mail server and let it do the munging), but none that let me just hit
"Reply" as I currently do.
Any thoughts?
Incidently, this would make a pretty good commerical service, along the
lines of that r-mail thing, to sell for a few hundred yen per month. You
could offer better spam filters, variable forwarding based on content or
time (to avoid those 4-in-the-morning e-mails), and all sorts of other
interesting things. Anybody who makes a million bucks off of this owes
me a beer.
(Agh! I just received two copies of a spam! That brings me up to seven
today....)
cjs
--
Curt Sampson <cjs@cynic.net> +81 3 5778 0123 de gustibus, aut bene aut nihil
She saw that he had singled her out from the three...for no reasoned purpose
of further acquaintance, but in commonplace obedience to conjunctive orders
from headquarters, unconsciously received by unfortunate men when the last
intention of their lives is to be occupied with the feminine.
[ Did you check the archives? http://www.appelsiini.net/keitai-l/ ]
Received on Tue Jun 26 08:19:00 2001