Hello Charles,

 

I don’t know if this is possible. I am using dovecot as imap server.

The dictionary quota backend supports both storage and messages quota limits. The current quota is kept in a dictionary. The available dictionaries are:

• MySQL
• PostgreSQL
• Flat file

The quota root format is:

quota = dict:<quota root name>:<username>[:<option>[...]]:<dictionary URI>

If username is left empty, the logged in username is used (this is typically what you want). Another useful username is '%d' for supporting domain-wide quotas.

The supported options are:

• noenforcing: Don't enforce quota limits, only track them.
• ignoreunlimited: If user has unlimited quota, don't track it"

-- 

Best regards,

Charles