optional remove script

mailrm.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+# Purge all configs from a previous attempt at a mail server.
+# Doesn't delete mail or anything like that.
+apt purge dovecot-core spamassassin postfix spamc opendkim
+
+# Some stragglers that often stay undeleted.
+rm -rf /etc/dovecot /var/lib/dovecot