Yes,
Recently there are many so called "DNS Poisioned", the way to pretence to be the right Name Server or DNS Server of one domain then respond or answer the wrong target to PC which request the info. it's like FAKE DNS SERVER that keep answer the wrong answer to the questioner.
This would lead worldwide visitor not able to reach your website or email, because your domain has been spoiled with wrong DNS tranffic answered. Like when you asking for the way to somewhere, then try to ask stranger that would keep answer with wrong destination to you... then where will you go?
