> originated from but most e-mail clients discard custom headers but preserve
> a 'In-Reply-To' header with the original message-id.
Don't count on it! :) I spent quite some time working on a full-text
mailing list search/archive system and one of the things I wanted to do
was preserve thread informtion. However it was surprising the number of
MUAs that did not generate a In-Reply-To header. Mostly it was Microsoft
Mail Client and quite a few similar internal mail systems with internet
gateways. Also beware that many mailers use the NNTP standard of
References: instead of in-reply-to. I would suggest using the Subject
line instead and generate some sort of ticket number and store it in the
subject line, and put a header in the message body instructing the user to
not alter the subject.
-Matt
--
Matt Hamilton [EMAIL PROTECTED]
Netsight Internet Solutions, Ltd. Business Vision on the Internet
http://www.netsight.co.uk +44 (0)117 9090901
Web Hosting | Web Design | Domain Names | Colocation | DB Integration
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