Can send but not receive emails.

Can send but not receive emails.

Hi,

I recently setup my Zoho mail account and everything was working perfectly.
I could send and receive emails just fine.

I have not made any changes to my domain/DNS settings or my Zoho Mail settings but now I can only send emails but not receive them.

I have checked my records via mxtoolbox.com and it shows that my MX records point to Zoho.( mx.zohomail.com) and ( mx2.zohomail.com)

Can you please help me.