No sending service shows in DNS for example.com: a null MX that says it accepts no mail, no sender in SPF, and a wildcard that answers every DKIM name.
Not checked: the crt.sh certificate log (read only with --ct).
0 sending services found from public records checked 2026-10-12 01:25 UTC (210 lookups in 0.0 s over Google DNS over HTTPS).
No sending service shows in DNS for example.com: a null MX that says it accepts no mail, no sender in SPF, and a wildcard that answers every DKIM name.
Not checked: the crt.sh certificate log (read only with --ct).
It publishes a null MX record, which tells senders it receives no email.
A wildcard record makes every selector look published, so keys there say nothing about which services sign for the domain.
210 lookups at 1 name