3 ms·
Not GP, but I think what they meant is having a MX record with a higher priority pointing to an unroutable IP blackhole IN A 240.0.0.1 @ MX 10 blackh
by acatton 4y ago
Not GP, but I think what they meant is having a MX record with a higher priority pointing to an unroutable IP
blackhole IN A 240.0.0.1
@ MX 10 blackhole.example.com
@ MX 20 mail.example.com
- jhugo 4y agoYup, exactly, for the reasons described in the sibling comment to yours. Doing it this way doesn't even delay mail much most of the time; many legitimate MTAs connect immediately to the priority-20 MX after failing to connect to the priority-10 one.