Hi,

If i understood correctly the extra field feature ( https://doc.dovecot.org/configuration_manual/authentication/user_database_extra_fields/ ), any extra field that is passed from a SQL query will overwrite any existing settings on the dovecot.conf configuration file ( if present ) .

For example, if i want to enable a plugin ( ex: acl ) on a per user basis, i would add a column\field ( ex: “acl_enabled” = 1 ) into my auth DB , then add into the dovecot password\user queries :

…

IF(acl_enabled  = 0, NULL, 'acl imap_acl') AS mail_plugins

…

While having in the dovecot.conf this setting :

…

mail_plugins = quota notify

protocol imap

mail_plugins = $mail_plugins imap_quota

…

From my test, this combination will lead to having the logging users with acl_enabled=1, a mail_plugins list of acl and imap_acl only, without the quota and notify plugins .

If i change the acl_value to 0, the returned mail_plugins list is empty and it will not overrive\overwrite the dovecot.conf mail_plugins configuration .

If it’s correct, there is a way to merge both settings, like having in the dovecot.conf a minimal\base subset of settings and adding any additional values via SQL queries ?

Thanks and best regards

Stefano