Each user may have an unlimited number of Internet email addresses. Quite simply, they are configured by adding those addresses to the user's vCard. If you are editing the user's address book entry using the admin utilities in WebCit, simply enter one or more addresses. Any addresses that are in one of your registered domains will automatically be honored for incoming email. Furthermore, if any addresses exist in a domain which you have declared a 'directory' domain, the user can receive email on any Citadel node which shares the 'Global Address Book' room. This allows multiple Citadel servers to act as redundant MX hosts.