i have the following mx problem.
i have to domains one is domain-name.net and the other is domainname.net. the difference is just the "-".
now i have create a mx record mail.domain-name.net. but i'm not able to create also an mx record for mail.domainname.net! ispconfig says always "This or a similar MX Record does already exist in this zone.". but in zone file is nothing! is there a problem with ispconfig?
(there is also nothing in the recycle bin!)