Upgrade from 2.0. to 2.2

[Aki Tuomi]

On 2017-03-03 13:22, Jakob Curdes wrote:
> Hello, we have a centos 6 server running dovecot 2.0 provided with the 
> OS, currently 2.0.9. We would like to upgrade to the 2.2.19 package 
> provided by the mailserver.guru repo. I read the upgrading docs for 
> 2.1 and 2.2 and found the following issues:
>
> 2.0 - 2.1:
> - define namespace inbox or delete 15-mailboxes.conf (we do not "care 
> about special use mailboxes")
> - plugins and UTF-8: we do not use one of the listed plugins
> - to allow mixed usernames set auth_username_format to "nothing"
> - solr backend: not used in our setup
> - expire plugin: not used
> - dsync: not used
> 2.1 - 2.2
> - fts-solr: not used (?)
> - autocreate: not used
> - other changes: trivial or not used
>
>
> Are there other things that we need to observe? Is a direct update 
> from 2.0.9 to 2.2.19 feasible with the above precautions or do we need 
> to put in a 2.1 version in between?
>
> Thank you for hints,
> Jakob

I would also consider possibility of upgrading the server too, so you 
would instead setup a new environment and migrate your users there 
instead of upgrading the old server. This way you could make sure 
everything works.

Aki