sendmail-8.12.6+cyrus-imapd-2.0.17: check presence of the cyrus mailbox during establishing SMTP connection

[Andrzej Filip]

Rob Siemborski wrote:
> On Fri, 7 Nov 2003, Andrzej Filip wrote:
> 
> 
>>>Now if I get any message with a RCPT TO of "me+spam" it will be rejected
>>>if the first test is ignored, even if it shouldn't be.
>>
>>Let me apply what I suggested to your example:
>>first rule uses data not available at "RCPT TO:" stage => "envelope based"
>>sieve script interpretation "quits" at this point doing nothing
>>[ the script is going to be interpreted fully during LMTP delivery ]
>  
> Ok, I misread what you were suggesting.  I still really don't see a huge
> advantage here, since the great majority of sieve scripts will be based
> off of more than just header information.

It would require users to "optimize" their sieve scripts to take advantage of 
the suggested feature.

I disagree with you but I am not volunteering to implement cyrus part of it :)
[ so my opinion is not important ]

> In any case, it is unclear what could usefully be done with this, as
> reject guarantees that an MDN will be sent, which SMTP error codes do not
> do.  

It will make remote host sending message to sendmail & cyrus pair responsible 
for generating the bounce message (in format beyond our control).

> A discard action has a similar problem -- you still need to accept
> the message but later throw it out.

This is a tricky problem from sendmail perspective.

As I wrote incorporating sieve into map lookup results send back to sendmail 
is an option to investigate in some future version of cyrus "map protocol" 
server. [Just do not forget that some people think it makes some sense :) ]

-- 
Andrzej [pl>en: Andrew] Adam Filip http://www.polbox.com/a/anfi/
anfi at priv.onet.pl anfi at xl.wp.pl [former: anfi at Box43.pl]