Whois Privacy admin email

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Whois Privacy sets mydomainname@domainservice.com as an admin contact.
I think it used to forward to my real email address.
But now it is not working; Domainservice.com's MX record is "dev.null".
Is this by intention?

<**************.***@domainservice.com>: Host or domain name not found. Name
    service error for name=dev.null type=A: Host not found

 

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Don't know what happened, but it's fixed now.