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Re: request discussion of two documents on SMTP relaying

2005-06-16 15:02:59

At 11:17 -0400 on 06/16/2005, Keith Moore wrote about Re: request discussion of two documents on SMTP relaying:

It seems likely that there will be some set of people who want to claim
that POP-before-SMTP is a good way to authenticate originators.  So if
it's not a good way to do that, we should probably say so.  Similar
logic would apply in the case of XTND XMIT.   Though I hope that we
don't find too many more ways that people are currently doing
authenticated message submission.

I have a question about the above statement. Why does submission of a message warrant more stringent/secure authentication than just reading incoming messages? IOW: If I must do authentication to the POP/IMAP Server before being allowed to read the messages from the server, why is this check not good/strong enough to allow me to submit new messages based on passing the authentication check?

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