client mail quota unlimited
Example:
ResellerA assign 100 Mb as (total) mail quota limit to ClientA ClientA create 2 mailbox with 50 Mb quota, when try to assign more quota to the third mailbox ISPConfig3 notify the quota is reached. ClientA start to asign 0 quota to new mailboxs .. and bypass total quota assigned.
I think that a client should not assign 'unlimited quota' to his mailboxes if he HAS NOT unlimited total mail quota (given from his reseller)