[Dovecot] Dovecot upgrade from 1.2.x to 2.0.x: roundcube/squirrelmail sent folder doesn't work any more

Hello,

After upgrading from 1.2.x to 2.0.x I'm having problems using sent folder in Webmail applications like roundcube mail and squirrelmail.

Relevant config dovecot.conf: mail_location = mbox:~:INBOX=/var/mail/%u

Different LIST behaviour from rawlog: 1.2.x: with Prefix ~/Mail A002 LIST "" "~/Mail/sent"

• LIST (\NoInferiors \UnMarked) "/" "~/Mail/sent" A002 OK List completed.

2.0.x: with Prefix ~/Mail A0003 LIST "" ~/Mail/sent A0003 OK List completed.:

Configured prefix for private spaces in roundcube mail is ~/Mail . Roundcube Webmail application checks for existence of the folder but dovecot doesn't return anything in 2.x.latest.

Is this by design? Any ideas to fix it by configuration? (I tried prefix Mail/ in roundcube mail without success)

Thunderbird works well.

Thnx.

Ciao, Gerhard