Support OpenSMTPd only on OpenBSD

roles/opensmtpd/templates/smtpd.conf.j2

@@ -1,17 +1,9 @@
-{% if ansible_lo0 is defined %}
 listen on lo0
-{% else %}
-listen on lo
-{% endif %}
 
-table aliases file:{{ opensmtpd_aliases }}
+table aliases file:/etc/mail/aliases
 
 # use obsolete smtps as it goes through firewalls better than 25
-{% if ansible_os_family in ["OpenBSD"] %}
 action "local" mbox alias <aliases>
 action "relay" relay host smtps://{{ mail_server }} mail-from "@{{ mail_domain }}"
 match for local action "local" 
 match for any action "relay"
-{% else %}
-accept from local for any relay via smtps://mail.foo.sh as "@foo.sh"
-{% endif %}