action reject and smtp RCPT TO:

Hello,

If sieve scripts are written in the form:

if (envelope tests....) { reject; stop;}
some other tests and actions;

the scripts can be applied once after the RCPT TO: command and once 
after the DATA command. If the first script calling is successful (stop; 
is reached without trying tests, that require headers or body), and the 
reject action is performed, then the sieve script can reject the message 
at the RCPT TO: level.
The application of such scripts is, e.g. for mailing lists, with scripts 
like
	if (recipient is a mailing list and sender is not allowed to post 
there) {reject; stop;}
which will save the consequent NDRs, send from the mailing list 
software. This approach is not considered in 
draft-ietf-sieve-refuse-reject-06, 2.2 Action reject...However 
implementations MAY refuse delivery over protocol ..., if and only if 
all of the following conditions are true:  2. ...
        Със здраве,
                Дилян