[Dovecot] sieve delivery to utf folders

[Stephan Bosch]

Nikita Koshikov schreef:
> Hello list,
> 
> Today, my users have noticed, that delivery to folders with non-english names is broken. For example, if I create russian directory, it correct encoded and display into mail-client program and my webmail:
> Encoded:		Normal view
> .INBOX.&BEIENQRBBEI-	русс
> 
> This is part of sieve script, which routing delivery to russian folder. 
> ....
> elsif allof (header :contains "Subject" "qwe")
> {
>         fileinto "INBOX/&BEIENQRBBEI-";
> }
> 
> But, when actualy delivery take place, in logs I have
> 
> Jul 30 17:13:49 deliver(koshikov.n at domain.com): Info: sieve: msgid=<4A71A9E6.5040301 at domain.com>: stored mail into mailbox 'INBOX/&-BEIENQRBBEI-
> 
> And folder .INBOX.&-BEIENQRBBEI- appears in users maildir. This folder can't be unencoded by mail-client program and user see exactly "&-BEIENQRBBEI-" under INBOX directory(also normaly encoded directory "&BEIENQRBBEI-" --> "русс" displays correct). Something breaks encoding and adds sing "-" to all words in utf encoded directory names.
> 
> I can't tell exactly when this problem appear, but I remember that I have tested delivery to russian directories by sieve scripts and all worked fine.
> 
> My current dovecot installation is 1.2.2, dovecot-sieve-0.1.9 and managesieve-0.11.7
You are using mUTF-7 in folder names. According to the Sieve 
specification, you must use the UTF-8 version. The fileinto command 
internally translates this to the mUTF-7 equivalent, so that the IMAP 
server sees it as expected. This is a change of about half a year ago:

http://hg.rename-it.nl/dovecot-1.2-sieve/rev/fc0395d50d04

Regards,

-- 
Stephan Bosch
stephan at rename-it.nl