ietf-822
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Re: MLM subaddress requirement

1997-08-05 14:59:45
On Tue, 5 Aug 1997 Valdis(_dot_)Kletnieks(_at_)vt(_dot_)edu wrote:

Date: Tue, 05 Aug 1997 16:03:10 -0400
From: Valdis(_dot_)Kletnieks(_at_)vt(_dot_)edu

On Tue, 05 Aug 1997 10:20:58 PDT, Chris Newman said:
What is the purpose of restricting postings based on the envelope address?
It's obviously *not* a security issue as anyone can generate email from
any address trivially (own a copy of Netscape?).  I claim the primary
purpose is to reduce spam.  Permitting postings from user if user+foo is
subscribed has no impact on this primary purpose.

ARGH!!!

How many times do I have to say this?

*YOU* *DO* *NOT* *KNOW* if 'user' and 'user+foo' are in fact the same
address or not.  You cannot tell if the remote system sending the mail is
or is not using your extension.

When non-ASCII text was added to 822 headers, a syntactic convention was
found which appears to have had no collision with any actually used ASCII
text, even though in principle it could.  It does not seem to me to be beyond
human ken to come up with such a syntax in this case.  It probably won't by
"+" or "-"  :-)

Donald 
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