[Dovecot] Multiple password schemes

Hi,

right now I have

default_pass_scheme = MD5-CRYPT

in my dovecot-sql-auth.conf file.

This works; however I noticed because of history a lot of my users still have a CRYPT password (not a MD5-CRYPT password). Now I get these errors:

dovecot: Feb 26 13:08:17 Info: auth-worker(default): sql(***, *******): MD5-CRYPT(0lifant) != 'i3/S6ZswGSfbk'

Any way to make Dovecot use another (fallback) password scheme when the default scheme isn't working?

Cheers,

Jan