I still don't understand what this breaks. I use a LE certificate for my smtp service, but as I understand it, other mail servers don't connect to it using a cl

I still don't understand what this breaks. I use a LE certificate for my smtp service, but as I understand it, other mail servers don't connect to it using a client cert, they just check that the cert deleivered is trusted. Or am I missing something? Does this break some custom setup?