diff --git a/mxmount/mxmount b/mxmount/mxmount
index 47d69d61..7c5c9524 100755
--- a/mxmount/mxmount
+++ b/mxmount/mxmount
@@ -78,11 +78,18 @@ sub create_exports {
 
     foreach my $mp (@$allmp) {
         next if($mp->{noexport});
-        @CMD = ($mp->{mountpoint}, $mp->{exportopts});
-
-        print join " ", "$exports: ", @CMD, "\n";
-        print EXPORTS join " ", @CMD, "\n";
-
+        my ($mountpoint,$exportopts)=($mp->{mountpoint}, $mp->{exportopts});    # '/amd/theinternet/1','@amd(sync,rw,...)'
+        my ($hostspec,$optspec)=$exportopts=~/^([^(]+)(.*)/;                    # '@amd','(sync,rw,...)'
+        my ($opts)=$optspec=~/\((.*)\)/;                                        # 'sync,rw,...'
+        my $hosts='';
+        warn "export $mountpoint to $hostspec opts $opts\n";
+        if (my ($group) = $hostspec=~/^@(.+)/) {
+            $hosts=`hostconfig --list $group`;                      # expanded group
+            $hosts or warn "group $group is empty\n";
+        } else {
+            $hosts=$hostspec;                                       # single host
+        }
+        $hosts and printf EXPORTS "%s -%s %s\n",$mountpoint,$opts,$hosts;
     }
     close EXPORTS;
 }