i need help to set up dns for e-mail

[ygtd8976i6]

Hi :

i have a subdomain at yola.com

and i want to make an e-mail for it
hosted on my home e-mail server
some thing like info@subdomain.yola.com

but i need a DNS

how can i set up a DNS for e-mail only

I am looking forward to hearing fro you .

Thank you .