Safe to downgrade 2.2 to 2.1?

[Florian Tischler]

Hi,

is it safe to downgrade Dovecot 2.2 to 2.1 (in my case 2.2.13 to 2.1.17 with 
mdbox format) or will there be troubles with index files and backup/restore 
is recommended?

Unfortunately with 2.2+ it is not to be possible to use acl + lazy_expunge 
together anymore, so downgrading is the only option for me...

@Timo, please fix acl + lazy_expunge in 2.2 if you find some time.

Florian

-- 
Florian Tischler
System Administrator
*Johann Radon Institute for Computational and Applied Mathematics (RICAM)
http://www.ricam.oeaw.ac.at/