Second link doesn't work, also, surely I need dns record if mx records must be neededNo need to change DNS, just forward / redirect the domain name from registrar.
For example: ASZ.com just use this URL as the redirect from registrar
https://dan.com/buy-domain/asz.com
When you get 10 mins spare, watch this video https://www.DNAcademy/catch-all-emails
Second link doesn't work, also, surely I need dns record if mx records must be needed