[44net] DNS entry add and clean up

Hi folks. After many-many years of absence . I back in the amprnet world. I did allready put back mtlgw.ampr.org running on a raspberry pi. I got a few very interesting projects on going. I will need to do somes modifications in the DNS entry. In the past I was using a mail robot to do it , but no idea on how , I will definitly need a refresh on how 's done today. Your help will be precious. 73 Normand Ve2vax / VA2nq