DNS Rules for Domain

[Jen]

What rules do i need to add to my domain on the DNS level to accept emails
Cause it sends emails perfectly
But when i send an email from my gmail to it, it doesn't receive

[grayfolk]

What rules do i need to add to my domain on the DNS level to accept emails
Cause it sends emails perfectly
But when i send an email from my gmail to it, it doesn't receive

You should add MX record.