Our systems here have many clients, we configure each of their email accounts without quotas (limited by the domain quota, in this case, 2.4GB). 1 Email account is almost reaching and has exceeded 1000MB, at which point horde starts saying there are 'quota' problems and warns at the top of the page saying how much in M and % is used/remaining. The used disk quota for the domain does not exceed the given quota. This 1000M quota is being enforced by horde. But I cannot locate any configuration files for this. Optimally, a 'per domain' or 'per user' configuration for this would be nice since it is only one user experiencing this, however, an overall configuration for this would also work. Thank you, Willing to provide any additional information for further assistance.