I'm having problems receiving email to my zoho account when sending from webhosting. Interesting thing is that it only happens when i send emails from web hostings. Eg. I have wordpress installed on one of the hostings and when adding new user with my this email, confirmation mail never comes  

It's not a problem with webhosting as I tried this with other emails and it works fine. Also tested with another hosting, same things happens ( others work but this email doesn't ) 

I have contact form on this website so I need email sent from there to my inbox 

Any ideas what could be the problem? 

Thanks in advance