Sorry to beat a repeating topic, but not sure what else to do.  I've recently configured my domain www.happybart.com and setup email bart@happybart.com.  I can send email out of Zoho mail, but when I try to send an email from my gmail address into the address above I get this error:

553 Relaying disallowed

My MX settings on my domain are:

mx.zoho.eu, priority 10, TTL 3600

mx2.zoho.eu, priority 20, TTL 3600

mx3.zoho.eu, priority 50, TTL 3600

Not sure what else I'm missing.  Can someone point me in the right direction?

Cheers,

Bart