[Dovecot] Saving Sent Messages to Sent Folder
tss at iki.fi
Thu Mar 4 16:32:56 EET 2010
On Thu, 2010-03-04 at 08:32 -0500, Charles Marcus wrote:
> There was another thread (it has come up at least a few times in the
> past few years I've been lurking) on the postfix list about having some
> kind of automatic 'Save to Sent' option to avoid the users mail client
> from having to upload messages twice (obviously the only ones of concern
> are ones with large attachments) - once to send it, and once to save the
> copy in the sent folder.
LEMONADE group solved this with IMAP URLAUTH (RFC 4467) and SMTP BURL
(RFC 4468) extensions. The idea is basically (copy&pasting from RFCs):
C: RCPT TO:<ron at gryffindor.example.com>
S: 250 2.1.5 ron at gryffindor.example.com OK.
C: BURL imap://firstname.lastname@example.org/outbox
S: 250 2.5.0 Ok.
So after receiving BURL command, SMTP server connects to IMAP server and
fetches the message:
S: * OK [CAPABILITY IMAP4REV1 URLAUTH] example.com IMAP server
C: a001 LOGIN submitserver secret
S: a001 OK submitserver logged in
C: a002 URLFETCH "imap://email@example.com/INBOX/;uid=20/
S: * URLFETCH "imap://firstname.lastname@example.org/INBOX/;uid=20/;section=1.2
S: Si vis pacem, para bellum.
S: a002 OK URLFETCH completed
Now, the problem is of course that neither Dovecot nor Postfix support
these extensions. For Dovecot I was thinking about using METADATA
extension's storage for storing the URLAUTH stuff, but METADATA isn't
really implemented yet either.
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