name of mailbox of implicit keep (was Re: Sieve extension for testing for mailbox)

[Stephan Bosch]

Op 5/11/2016 om 8:34 PM schreef Jon Kristensen:
> Steffen Kaiser <skdovecot at smail.inf.fh-brs.de> writes:
>
>> On Tue, 10 May 2016, Jon Kristensen wrote:
>>
>>> Which Pigeonhole Sieve extension should I use to process/test a
>>> message depending on whether the message is in a particular mailbox?
>>> (Is it the mboxmetadata extension by any chance? If so, I would
>>> appreciate if someone could tell me what the reason is for it not
>>> being enabled by default.)
>>
>>> The reason I want to perform this test is that I have configured my
>>> MTA to deliver "outgoing" e-mails to my "Sent" IMAP folder, and
>>> these messages arrive unread. I would like to mark them as read
>>> using Sieve.
>>
>> er, I guess, "message is in a particular mailbox" is meaning it to be
>> spooled, or something like that, right?
>>
>> Do you use subaddressing (aka +addressing, +detail addressing)? Then
>> look here:
>> http://wiki2.dovecot.org/Pigeonhole/Sieve/Examples#Plus_Addressed_mail_filtering
>>
>> If you want to resolve the question in the second paragraphe, search
>> the mailing list archive about how to get the name of the mailbox,
>> the implicit keep stores the message in. I'm pretty sure, that there
>> was such question lately.
>>
>> If you actually want to resolve the question in the first paragraphe,
>> to check whether or not the same message has been spooled in a folder
>> already (aka duplicate check), check out the duplicate extension with
>> ":handle" argument. But you probably need to know the target mailbox,
>> too.
>
> I apologize for not expressing my problem in clear enough terms.
>
> My e-mail server will put sent e-mail to the ~/.Maildir/.Sent (which
> is also a Maildir directory); naturally, the e-mail is first written
> into ~/.Maildir/.Sent/tmp, and then it's moved to ~/.Maildir/.Sent/new.
>
> After this has happened, I would like Dovecot to run a Sieve program
> that will discover that the e-mail is in the "Sent" folder, and mark
> it as seen.
>
> To explain what I'm imagining with code:
>
> if folder :is "Sent" {
>    setflag "\\Seen";
> }
>
> So I don't use subaddressing. I always know the target mailbox, but
> it's always "Sent" (this is configured in the MTA).
>
> I guess knowing the name of the mailbox that implicit keep stores the
> message in would solve my problem.
>
> I'm assuming you are referring to this:
>
> https://raw.githubusercontent.com/dovecot/pigeonhole/master/doc/rfc/spec-bosch-sieve-dovecot-environment.txt
>
>
> And in particular this:
>
>   "vnd.dovecot.default-mailbox"
>         The default mailbox that is used by the (implicit) keep
>         action.
>         Normally, this will always yield "INBOX", unless this is
>         changed in the configuration.
>
> It says that this normally will yield "INBOX". Do you, given my
> explanation above, think that it would yield "Sent" in my case? If
> not, how would I be able to use this?

Your explanation suggests the MTA is directly delivering messages to the
Sent folder. In that case Sieve is never involved. Sieve is run only at
delivery when said delivery is performed using Dovecot's LDA or LMTP agents.

If you're using dovecot-lda, the target (default) mailbox can be
specified using the -m option. LMTP is less flexible and can only use
what's after the `recipient_delimiter' in the local part of the  address
as target mailbox when `lmtp_save_to_detail_mailbox=yes'.

Sieve will be able to see the configured default mailbox in the
environment extension you mentioned above. You can define an
administrator script for marking messages as seen using the sieve_before
setting. This script can also prevent the normal user script from being
executed by canceling the implicit keep.

Regards,

Stephan.