It appears that Benny Pedersen <m...@junc.eu> said: >>>> gmail.dk. 300 IN MX 0 . >>> >>> if nullMX is added then spf and dmarc can be removed >> >> You need both the null MX and the SPF. Null MX says you >> don't receive mail, SPF -all says you don't send mail. > >why is spf needed if domain is nullMx ?
Null MX says you don't receive mail, SPF -all says you don't send mail. They're different directions. >in other words if a domain is nullMx postfix still reject it, aswell for >senders Not all MTAs work the same. R's, John
