Hi James,

On Fri, 6 Sep 2019 11:07:20 +0100
James Beck <james.b...@aa.net.uk> wrote:

> I tested a local build with that patch and I don't think it is a
> complete fix.  In our setup, it stalls replication for our webmail
> users who use the Roundcube sieve plugin:
> 
> Sep 05 23:21:04 <obfuscated> dovecot[12574]: doveadm: Error:
> Exporting mailbox INBOX failed: Mailbox attribute
> vendor/vendor.dovecot/pvt/server/sieve/files/roundcube lookup failed:
> Mailbox attributes not enabled

I also got this error when migrating my configuration from stretch to
buster and added the following setting to my 10-mail.conf:

mail_attribute_dict = file:~/dovecot-attributes

Not sure why that setting is needed in my setup to be honest, and the
dovecot-attributes file doesn't ever seem to get created. But the error
was gone after adding it.

> It's possible that our Roundcube configuration is doing something odd
> with sieve, but sieve filter replication with this setup worked before
> this bug was introduced.


I just tested creating, editing and removing a sieve config via
roundcube's sieve plugin (using roundcube from Debian buster) and
everything went smoothly.

I'm running a custom build of dovecot with the referenced patch
cherry-picked for a few weeks now (I recently updated it to version
1:2.3.4.1-5+deb10u1 because of the security fix). I haven't noticed any
issues.

Regards
Lukas

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