doc,email-validator: document the new NULLMX handling

diff --git a/doc/man1/email-validator.1 b/doc/man1/email-validator.1
index 1e0e144940db48e78f3b7ddc5428457c81d7b86b..605b57010256b19858024cf973232358b757a6f3 100644 (file)
--- a/doc/man1/email-validator.1
+++ b/doc/man1/email-validator.1
@@ -33,10 +33,12 @@ grammar (see the \fB\-\-rfc5322\fR option).
 
 .IP \[bu]
 Confirmation of the existence of an \fIMX\fR record for the domain
 
 .IP \[bu]
 Confirmation of the existence of an \fIMX\fR record for the domain

-part of the address. This is not required; in fact many domains accept
-mail via an \fIA\fR record for e.g. example.com which is used in lieu
-of an \fIMX\fR record. This behavior can be controlled via the
-\fR\-\-accept\-a\fR flag.
+part of the address. NULLMX (RFC7505) records are not accepted. This
+is not required; in fact many domains accept mail via an \fIA\fR
+record for (say) example.com which is used in lieu of an \fIMX\fR
+record. This behavior can be controlled via the \fR\-\-accept\-a\fR
+flag, but note that \fR\-\-accept\-a\fR is ignored for domains that
+have NULLMX records.

 
 .P
 These checks are performed in parallel using the number of available
 
 .P
 These checks are performed in parallel using the number of available

diff --git a/email-validator.cabal b/email-validator.cabal
index 6627128b23fd5e7a16422d88872275cc8bd4eaea..3e975f393b92cdbfefb234883f2640d4cf97de25 100644 (file)
--- a/email-validator.cabal
+++ b/email-validator.cabal
@@ -23,10 +23,13 @@ description:
     * A syntax check using a regular expression, or the full RFC 5322
       grammar (see the @--rfc5322@ option).
 
     * A syntax check using a regular expression, or the full RFC 5322
       grammar (see the @--rfc5322@ option).
 

-    * Confirmation of the existence of an @MX@ record for the domain part of
-      the address. This is not required; in fact many domains accept mail
-      via an @A@ record for e.g. example.com which is used in lieu of an @MX@
-      record. This behavior can be controlled via the @--accept-a@ flag.
+    * Confirmation of the existence of an @MX@ record for the domain
+      part of the address. NULLMX (RFC7505) records are not
+      accepted. This is not required; in fact many domains accept mail
+      via an @A@ record for (say) example.com which is used in lieu of
+      an @MX@ record. This behavior can be controlled via the
+      @--accept-a@ flag, but note that @--accept-a@ is ignored for
+      domains that have NULLMX records.

 
   These checks are performed in parallel using the number of available
   threads. To increase the number of threads, you can pass the
 
   These checks are performed in parallel using the number of available
   threads. To increase the number of threads, you can pass the