function resolveMx
          
Usage in Deno
import { resolveMx } from "node:dns";
resolveMx(hostname: string,callback: (err: ErrnoException | null,addresses: MxRecord[],) => void,): void 
      Uses the DNS protocol to resolve mail exchange records (MX records) for the hostname. The addresses argument passed to the callback function will
contain an array of objects containing both a priority and exchange property (e.g. [{priority: 10, exchange: 'mx.example.com'}, ...]).
callback: (err: ErrnoException | null,addresses: MxRecord[],) => void
      
    void