amispammer(1) on Linux
The text a5a3374be7e1, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it. The page shows this text now.
The way to know if your MX IPs are blacklisted
Flags it lists
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-T -
-d -
-f -
-h -
-i -
-s -
-t -
-v