--- make_aliases	
+++ make_aliases	
@@ -63,11 +63,11 @@ 
 if [ -n "$r" ]; then
        p="$r"
 else
-       r=`getent passwd |awk -F: -v "uid_min=$UID_MIN" '{if ($3>=uid_min){print $1;exit}}' |egrep -v '^(root|postmaster)$'`
+       r=`getent passwd |awk -F: -v "uid_min=$UID_MIN" '{if ($1~/^(root|postmaster)$/) next; if ($3>=uid_min){print $1;exit}}'`
        if [ -n "$r" ]; then
                p="root:           $r"
        else
-               p=
+               p="#not defined"
        fi
 fi
 if [ -n "$p" ]; then