Dave Crocker wrote on 20 April 2003 02:19
"doubled ended" sounds like a dandy term. what does it mean?
if it means "at both ends" then i would be quite interested to hear how
any enhancement that involves interoperability can be useful if deployed
to only one component.
Example 1:
Email filteroing for viruses. Implemented at receiver's end. Or at
sender's end. Doesn't matter which. Doesn't have to implemented at both
ends for parties who wish to interoperate. Implement at receiver's end only
if you don't wish to interoperate with deliberate transmitters of viruses.
Example 2:
Spam filtering using a reliable BL. Implement at receiver's end. Implement
at sender's end if you think of sender as including ISP MTA as well as
end-user MUA. But don't implement at receiver's end if you don't want to
interoperate with spammers.
Frankly, I think your comment is crazy. I could go on listing enhancements
that can be applied at one end or at the other end or at both ends and still
allow all required interworking until I got writer's cramp, and still would
not have listed all the ones that I have seen implemented.
Tom Thomson
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