Contactform and emailadress from parked domain defect?

[semsturkenboom13]

Hello Since 2 days i have a problem, the contactform on my site worked very well. I always receive the confirmation emails, but since 2 days it doesn't work anymore, i didn't change anything in the contactform. Also the emailadress from my parked domain: e a r p h o n e d i s c o u n t e r . n l doesn't work anymore, I cant send mails and I also can't receive mails.

Can someone tell me what's wrong?

Regards,
Sem