recipient delimiter and sieve filters

[André Rodier]

On 24/03/18 10:24, Stephan Bosch wrote:
> Op 3/24/2018 om 9:16 AM schreef André Rodier:
>> Dear all,
>>
>> I have found a way to  automatically copy sent emails in the "Sent"
>> folder, but I am not sure it is the simplest and more reliable way on
>> the long term.
>>
>> I am open to suggestions if I miss a feature in Dovecot - or Postfix,
>> that allows me to do this. I vaguely remember an SMTP extension that do
>> that, but my memory could be wrong.
> 
> I think you mean:
> 
> https://tools.ietf.org/html/rfc4468
> 
> Which was recently added to Dovecot as a feature:
> 
> https://wiki.dovecot.org/Submission
> 
> However, clients will not support this at this time, so you will not be
> helped there.
> 
>> First, I use "~" as a recipient delimiter. Then, I set up a postfix
>> senders_bcc_map that add the ~Sent part:
>>
>> andre at homebox.space → bcc: andre~Sent at homebox.space
>>
>> It worked, except that the emails was marked as new.
>>
>> I tried first to add a global sieve filter like this:
>> ----------------------------------------------------------------------
>> # Sieve script executed before for user
>> require ["fileinto","imap4flags"];
>>
>> # Move automatically copied emails to the sent folder
>> # And mark them as read
>> if header :contains "Delivered-To" "~Sent"
>> {
>>   setflag "\\Seen";
>>   fileinto "Sent";
>> }
>> ----------------------------------------------------------------------
>> But it did not work, so maybe there is a trick I am not aware of.
> 
> The Delivered-To header is currently only added when there is a single
> recipient in the LMTP session. It would not surprise me when the ~Sent
> Bcc is batched in the same transaction by Postfix, which means that this
> header is never added.
> 
> You'd better use the envelope extension:
> 
> https://tools.ietf.org/html/rfc5228#section-5.4
> 
> 
> Regards,
> 
> Stephan.
> 

Thank you, Stephan.

Yes, the link was what I had in mind.


Kind regards,
André