I started to use Mailchannels as a SMTP relay and according to its documentation I need to add SPF records,
however they suggest to end the TXT line with the string "?all" why CPanel inserts as default "~all"
So I was wondering what is the difference
however they suggest to end the TXT line with the string "?all" why CPanel inserts as default "~all"
So I was wondering what is the difference