domain already exist

domain already exist

I'm try to add my domain to setup Email account but this message appear  "domain already exist"
my domain is www.mascs.net


Please i need your assist to fix this problem


      • Sticky Posts

      • Deprecation of SMS-based multi-factor authentication (MFA) mode

        Overview of SMS-based OTP MFA mode The SMS-based OTP MFA method involves the delivery of a one-time password to a user's mobile phone via SMS. The user receives the OTP on their mobile phone and enters it to sign into their account. SMS-based OTPs offer