MDaemon limits the number of allowable gateways to the number of users on the license. For example, a MDaemon 50 user license will be able to configure 50 domain gateways.
The installer will throw up a warning if the current number of gateway domains exceeds the license key size. If this is the case, none of the gateway configurations will be lost. Gateways will be preserved and can still be found in Gateways.dat file in the \MDaemon\App directory. MDaemon will allow access and use of the first X gateways found in the dat file and the automatic gateway creation feature will be disabled. Upgrading to a larger key will re-enable the remaining gateway domains.