Docs: enhance section on redirect router :defer: & :fail:

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 68d9c056f6623fb9c51c1987f1ae7f4262cf0c53..dfbd7a41a2cc01e5f001f031edf549296337609f 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -21515,7 +21515,7 @@ The text is not included in the response to an EXPN command. In non-SMTP cases
 the text is included in the error message that Exim generates.
 
 .cindex "SMTP" "error codes"
 the text is included in the error message that Exim generates.
 
 .cindex "SMTP" "error codes"

-By default, Exim sends a 451 SMTP code for a &':defer:'&, and 550 for
+By default for verify, Exim sends a 451 SMTP code for a &':defer:'&, and 550 for

 &':fail:'&. However, if the message starts with three digits followed by a
 space, optionally followed by an extended code of the form &'n.n.n'&, also
 followed by a space, and the very first digit is the same as the default error
 &':fail:'&. However, if the message starts with three digits followed by a
 space, optionally followed by an extended code of the form &'n.n.n'&, also
 followed by a space, and the very first digit is the same as the default error