Downgrade dovecot to 1.0.10 give me error :

mail# /usr/local/etc/rc.d/dovecot start
Starting dovecot.
Error: Error in configuration file /usr/local/etc/dovecot.conf line 262: Unknown setting: mail_privileged_group
Fatal: Invalid configuration in /usr/local/etc/dovecot.conf

Find line 262, talk about mail_priveleged_group

solution :

change
mail_privileged_group = mail

into

mail_extra_groups = mail

and start dovecot service.

Work

• mail_privileged_group
• dovecot mail_privileged_group
• unknown setting: mail_privileged_group
• unknown setting: mail_extra_groups
• fatal: invalid configuration in /usr/local/etc/dovecot conf
• set mail_privileged_group=mail
• mail_privileged_group = mail
• unknown setting: mail_privileged_group fatal: invalid configuration in /etc/dovecot/dovecot conf
• dovecot unknown setting: mail_privileged_group
• error in configuration file /etc/dovecot/dovecot conf unknown setting: mail_privileged_group
• mail_privileged_group:
• (set mail_privileged_group=mail
• mail_privileged_group dovecot
• unknown setting :mail_privileged_group
• unknown setting: mail_extra_groups fatal: invalid configuration in /etc/dovecot conf
• Unknown setting: mail_extra_groups Fatal: Invalid configuration in /usr/local/etc/dovecot conf
• mail_privileged_group =
• mail_privileget_group
• mail_extra_groups = unknown
• (set mail_privileged_group=mail)
• /usr/local/etc/dovecot conf line 262: unknown setting: mail_extra_groups
• dovecot 1 0 mail_privileged_group
• dovecot error: non-existing mail_privileged_group: mail
• dovecot mail_extra_group mail_privileged_group
• dovecot mail_extra_groups = mail 262 unknown setting
• dovecot mail_privileged_group = invalid configuration
• dovecot unknown setting: mail_extra_groups
• dovecotError Unknown setting: mail_privileged_group
• error in configuration file /etc/dovecot/dovecot conf line 262: unknown setting: mail_extra_groups
• invalid configuration dovecot
• mail_extra_groups
• Unknown setting: mail_privileged_groups