Re: [Dovecot] dovecot lda & sieve: resubmit folder for resieving

On Wed, 2010-07-28 at 11:29 +0200, Patrick Ben Koetter wrote:

• Axel Thimm Axel.Thimm@ATrpms.net:

...

I'm currently restructuring my mail archives and migrated from a decade and a half old procmail supported solution to sieve.

While doing so I often found that I'd like to filter a bunch of messages (with "bunch" in the area of 1-10K) with my shiny new sieve script. I found in the wiki a way to do that:

http://wiki.dovecot.org/HowTo/RefilterMail

And it works well, it picks the mails via IMAP and resubmits them to dovecot-lda. But unfortunately the IMAP flags including \Sent, \Flagged etc are lost in the process.

I started checking for other solutions beside getmail that might extract the imap flags as well, but I wouldn't know how to pass them to dovecot-lda.

Would it help to use sieve capabilities to add flags?

First getmail/fetchmail etc. would have to add some custom headers like

X-Sieve-Please-Add-These-Flags: \Seen

But before that can happen getmail/fetchmail need to be able to retrieve the IMAP flags and add them to a header, finally sieve would need to be able to remove this header to restore the mail back to its original form.

If dovecot/pigeonhole could manage the resubmission internally, then you also have the benefit, that it wouldn't need any extraction/reinsertion in formats like dbox at all (unless sieve allows changing headers/body).

http://ATrpms.net/