diff --git a/mxstartup2mxconfig b/mxstartup2mxconfig
index 021f915..b1b2010 100755
--- a/mxstartup2mxconfig
+++ b/mxstartup2mxconfig
@@ -248,27 +248,10 @@ sub print_ips_cfg {
 
 ##############################################################################
 
-sub walknetgroup {
-   my @ng;
-   
-   &y(\@ng,@_);
-   
-   sub y {
-     my ($ary,$m)=@_;
-     $_=`ypmatch $m netgroup 2>/dev/null`;
-     foreach ( split ) {
-        if (/\(/) {
-	  s/[\(\),]//g;
-          push @$ary, $_;
-        } else {
-          foreach ( split ) {
-            &y($ary,$_);
-          }
-        }
-     }
-   }
-   
-   return @ng;
+sub hostconfig_list {
+  my $tag = shift;
+  $_=`/usr/sbin/hostconfig --list $tag 2>/dev/null`;
+  return ( split );
 }
 
 
@@ -279,8 +262,9 @@ sub expand_hosts {
   
   foreach my $host (@oh) {
     if($host =~ /^\@(\S+)/) {
-      push @hosts, walknetgroup($1);
-    } elsif($host =~ /^(\/\S+)/) {
+       push @hosts, hostconfig_list($1);
+    }
+    elsif ($host =~ /^(\/\S+)/) {
       next unless(-r $1);
       push @hosts, expand_hosts(read_file($1));
     } else {