With my ispconfig installation (debian 9, ispconfig-3.2.1, multi server setup) a client with applied overall mail quota is not able to add email addresses with unlimited quota. It would be nice if this is possible since clients don't want to juggle with quotas for email addresses. Is this true for every installation or did I make a mistake? If this is currently not possible: Ideas how to circumvent this? How difficult is an implementation? Who else wants this feature?