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Re: 2821bis and address rewriting (was: Re: Fixing graylisting [was TBR])

2007-11-21 14:26:18

Tony Finch writes:
On Wed, 21 Nov 2007, Arnt Gulbrandsen wrote:
But 3461 (bottom two paragraphs of page 13) says any message can have <> as sender when it reaches the recipient.

Null return paths have never been particularly consistent or clearly scoped :-) But still, RFC 3461 doesn't say that arbitrary programs can send email from <> because they think it would be neat.

As I read it, it says that arbitrary SMTP clients may send email from <> because the sender of the message doesn't want to be told about the fate of the message. IMO that's much the same thing.


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