2 ms·
That's not just one, most require AAAA or A records. With SPF, DKIM, DMARC correctly set up, correct IPv4 and IPv6 reverse DNS, only A or AAAA or NS or GLUE re
by kuschku 9y ago
That's not just one, most require AAAA or A records.
With SPF, DKIM, DMARC correctly set up, correct IPv4 and IPv6 reverse DNS, only A or AAAA or NS or GLUE records used in the entire resolution path, correct from and reply-to addresses, you should usually be good to go, though.