2 ms·
Gmail now also requires IPv6 rDNS for inbound mail servers - that caught me out for a few days when it was implemented. Not a problem with a good ISP but many
by dingaling 13y ago
Gmail now also requires IPv6 rDNS for inbound mail servers - that caught me out for a few days when it was implemented.
Not a problem with a good ISP but many retail ISPs don't have a process for maintaining rDNS to arbitrary blocks held by subscribers.