mention DKIM Signing in the introduction

Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>

diff --git a/pmg-intro.adoc b/pmg-intro.adoc
index 873c9beca2e4a21abee8e91f997d1fd1ae922b6c..3b87d2d319a1ada309c39ad81ff0d2221eee5388 100644 (file)
--- a/pmg-intro.adoc
+++ b/pmg-intro.adoc
@@ -180,6 +180,13 @@ summarized by an intelligent algorithm.
 - Status of final delivery
 
 
+DKIM Signing
+~~~~~~~~~~~~
+
+{pmg} offers the possibility to optionally sign outgoing emails with
+xref:pmgconfig_mailproxy_dkim[DKIM].
+
+
 High Availability with Proxmox HA Cluster
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~