Index: CONTRIBUTING.md
===================================================================
--- CONTRIBUTING.md
+++ CONTRIBUTING.md
@@ -107,6 +107,13 @@
 Shell scripts in the base system cannot use bash or bash extensions
 not present in FreeBSD's [shell](https://man.freebsd.org/cgi/man.cgi?query=sh&sektion=1).
 
+## Author Name and Email
+
+We require that contributions are associated with a unique identity.
+The author email address should not be `<something>@users.noreply.github.com`.
+Do note that your name and email address will become a permanent and immutable
+part of the public Git history of the FreeBSD source tree.
+
 ## Signed-off-by
 
 Other projects use Signed-off-by to create a paper trail for contributions they