The following text is taken from bangalore linux user group. I had one
question here. Do BCC: doesn't solve this problem?
Regards
Guru prasath
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Crossposting:
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Do not crosspost. Crossposting means sending a single message to
multiple mailing lists by putting all their addresses in the To: or CC:
field of your message. Mailing list subscribers hate this because it
sometimes causes people replying to the post to inadvertently posting to
other lists 9which they do not want to, since it reveals their email
address on lists they aren't subscribed to) and also insults the basic
mailing list itself, but showing that you do not have faith enough in
this mailing list to get an answer, and are therefore covering multiple
bets. If you need to send the same message to multiple mailing lists, do
it one at a time, so that the message appears to be only for that list.