Some sites may not accept an email address that includes a subdomain (@subdomain.mozmail.com) and others have stopped accepting all addresses except those from Gmail, Hotmail, or Yahoo accounts.
Alcun sitos pote non acceptar un adresse email que include un sub-dominio (@subdomain.mozmail.com) e alteres ha cessate de acceptar tote le adresses excepte illos del contos Gmail, Hotmail o Yahoo.