best practices for migrating to new dovecot version

[Christian Kivalo]

>At this time, I have not deployed Solr as the search engine for
>dovecot,
>but as I am heavily involved with that community, I probably should. If
>there are any guides about switching an existing setup over to Solr,
>please point me at them.
There where some links to dovecot / solr guides posted to this list in the last months. One of those helped me to switch from solr v3 to solr v7 but I don't currently recall which one.
Searching the list archives should bring up those links.
-- 
Christian Kivalo