Emails go out, but do not come in...

Emails go out, but do not come in...

Some people have recently report, that emails are not coming to me.
Emails have been missed from around 6 different people in the last 2 weeks.

I do not understand why I can send emails and not receive. My MX records are set as expected and this is the first thing I checked. I have had no issues until recently.
Any help and advice is much appreciated.

Duane

Edit: domain is dofe.rocks