diff --git a/procmail/index.cgi b/procmail/index.cgi
index 3b3fea02c..9e3a988dd 100755
--- a/procmail/index.cgi
+++ b/procmail/index.cgi
@@ -39,6 +39,12 @@ else {
 		}
 	}
 
+# Check if config is from Virtualmin
+@conf = &get_procmailrc();
+if (&check_virtualmin_config(\@conf)) {
+	print "<b>",$text{'index_virtualmin'},"</b><p>\n";
+	}
+
 # Build links for adding things
 @links = ( &ui_link("edit_recipe.cgi?new=1",$text{'index_add'}),
 	   &ui_link("edit_recipe.cgi?new=1&block=1",$text{'index_badd'}),
@@ -46,7 +52,6 @@ else {
 push(@links, &ui_link("edit_inc.cgi?new=1",$text{'index_iadd'}))
 	if (!$includes);
 
-@conf = &get_procmailrc();
 if (@conf) {
 	@tds = ( "width=5" );
 	print &ui_form_start("delete_recipes.cgi", "post");
diff --git a/procmail/lang/en b/procmail/lang/en
index 97e760c85..e03722ace 100644
--- a/procmail/lang/en
+++ b/procmail/lang/en
@@ -2,6 +2,7 @@ index_title=Procmail Mail Filter
 index_procmail=Procmail mail filter
 index_desc_other=The procmail actions below from $1 will apply to <b>all</b> email delivered to users on your system. However, they will only be used if Procmail is installed and your mail server is configured to use it.
 index_mserr=Warning - any rules defined below will not be used : $1
+index_virtualmin=Warning - your system's procmail configuration was created by Virtualmin to allow per-domain spam and virus filtering. Changing it here may interfere with Virtualmin's functionality.
 index_action=Action to take
 index_conds=Conditions
 index_move=Move
diff --git a/procmail/procmail-lib.pl b/procmail/procmail-lib.pl
index ee300d357..7505f87ea 100755
--- a/procmail/procmail-lib.pl
+++ b/procmail/procmail-lib.pl
@@ -365,6 +365,23 @@ elsif ($ms eq "sendmail") {
 return ($ms, $err);
 }
 
+# check_virtualmin_config(&config)
+# Returns 1 if Virtualmin created this procmail config
+sub check_virtualmin_config
+{
+my ($conf) = @_;
+return 0 if (!&foreign_check("virtual-server"));
+&foreign_require("virtual-server");
+my $gotvirt = 0;
+foreach my $r (@$conf) {
+        if ($r->{'type'} eq '=' &&
+            $r->{'action'} =~ /^VIRTUALMIN=/) {
+                $gotvirt++;
+                }
+	}
+return $gotvirt;
+}
+
 @known_flags = ('H', 'B', 'D', 'h', 'b', 'c', 'w', 'W', 'i', 'r', 'f');
 
 1;