postfix: sort postscreen access entries

postfix/templates/postscreen_access.cidr.j2

@@ -20,11 +20,11 @@
 {% endif %}
 {% if 'mx' in net %}
 {{ net.mx|comment('plain', prefix='', postfix='') }}
-{% for mx in q('dig', net.mx, 'qtype=MX') %}
-{% for addr in q('dig', mx.split(' ', maxsplit=1)[-1], 'qtype=A') %}
+{% for mx in q('dig', net.mx, 'qtype=MX')|sort %}
+{% for addr in q('dig', mx.split(' ', maxsplit=1)[-1], 'qtype=A')|sort %}
 {{ addr }}	{{ net.action|default('dunno') }}
 {% endfor %}
-{% for addr in q('dig', mx.split(' ', maxsplit=1)[-1], 'qtype=AAAA') %}
+{% for addr in q('dig', mx.split(' ', maxsplit=1)[-1], 'qtype=AAAA')|sort %}
 {{ addr }}	{{ net.action|default('dunno') }}
 {% endfor %}
 {% endfor %}