Re: List of open issues with Sieve reject draft (draft-ietf-sieve-refus

Alexey Melnikov writes:
> 3). Arnt has requested to allow for reject+redirect to be treated as 
> just reject. I am not sure I like that. Opinions?
My reason:

If an implementation takes some trouble (e.g. using the postfix content 
filter interface), it can evaluate some clauses of a sieve script based 
only on the information in MAIL FROM and/or RCPT TO. After RCPT TO, 
such an implementation may know that one clause in the script directs 
the interpreter to reject the message, but it does not know whether 
other actions are to be run, because other tests cannot yet be 
evaluated.
As I read the current draft, such an interpreter is not allowed to 
reject the RCPT TO command, because it does not yet know whether the 
script is valid: The script may also try to execute some action which 
is incompatible with reject.
Arnt