I can no longer send or receive messages with email addresses ending in my domain name. Who can I contact to resolve this problem?
Contact your Registrar after making sure that other email addresses, such as those assigned by your Internet Service Provider (ISP), are working properly. It may be that the failure is linked to a temporary malfunction of its domain name servers. If you have chosen to manage your domain name servers yourself, we advise you to contact a specialised IT service provider.