dovecot - Feb 2017 - Problem with Horde "Mailbox does not support mod-sequences"

Hi list!

I already asked about this problem about two years ago, but I couldn't  
solve my problem...

Now I have a new Server, with Debian 8 and Dovecot 2.2.13-12 (from  
Debian repositories) and Horde 5.2.13.

When I delete an E-Mail, I always get the error "Mailbox does not  
support mod-sequences".
It results in having the E-Mail not moved to Trash and I must update  
more times the folder to see the E-Mail moved to Trash...

Could someone help me to add this support for mod-sequences?

Thanks a lot!
Luca Bertoncello
(lucabert at lucabert.de)

> On 13 February 2017, at 01:26, Luca Bertoncello <lucabert at
lucabert.de> wrote:
> 
> Hi list!
> 
> I already asked about this problem about two years ago, but I couldn't
solve my problem...
> 
> Now I have a new Server, with Debian 8 and Dovecot 2.2.13-12 (from Debian
repositories) and Horde 5.2.13.
> 
> When I delete an E-Mail, I always get the error "Mailbox does not
support mod-sequences".
> It results in having the E-Mail not moved to Trash and I must update more
times the folder to see the E-Mail moved to Trash...
> 
> Could someone help me to add this support for mod-sequences?
> 
A quick search turned up: 
https://dovecot.org/list/dovecot/2015-February/099674.html

Perhaps that will help.

Zitat von Doug Hardie <doug at mail.sermon-archive.info>:
> A quick search turned up:   
> https://dovecot.org/list/dovecot/2015-February/099674.html
>
> Perhaps that will help.
Hello Doug,

did you read the post? :)
It was __MY__ post where I said that the solution suggested by Michael  
Slusarz didn't help me and asked for other suggestion...

Continuing this post:

- how can I check if mod-sequences are enabled?
- how can I check WHY they don't work for this account (at least two  
accounts have the problem)

Thanks
Luca Bertoncello
(lucabert at lucabert.de)