Support specifyin multiple hostnames

.env.dist

@@ -23,9 +23,7 @@ BIND_ADDRESS=127.0.0.1
 # Main mail domain
 DOMAIN=mailu.io
 
-# Main hostname for announces, and list of all available hostnames, separated
+# Hostnames for this server, separated with comas
-# by comas
-HOSTNAME=mail.mailu.io
 HOSTNAMES=mail.mailu.io,alternative.mailu.io,yetanother.mailu.io
 
 # Postmaster local part (will append the main mail domain)

admin/mailu/ui/templates/domain/details.html

@@ -15,6 +15,7 @@
 {% endblock %}
 
 {% block box %}
+{% let hostname = config["HOSTNAMES"].split(",")[0] %}
 <table class="table table-bordered">
   <tbody>
     <tr>
@@ -28,8 +29,8 @@
     <tr>
       <th>{% trans %}DNS SPF entries{% endtrans %}</th>
       <td><pre>
-{{ domain.name }}. 600 IN TXT "v=spf1 mx a:{{ config["HOSTNAME"] }} -all"
+{{ domain.name }}. 600 IN TXT "v=spf1 mx a:{{ hostname }} -all"
-{{ domain.name }}. 600 IN SPF "v=spf1 mx a:{{ config["HOSTNAME"] }} -all"</pre></td>
+{{ domain.name }}. 600 IN SPF "v=spf1 mx a:{{ hostname }} -all"</pre></td>
     </tr>
     {% if domain.dkim_publickey %}
     <tr>

dovecot/conf/dovecot.conf

@@ -4,7 +4,7 @@
 log_path = /dev/stderr
 protocols = imap pop3 lmtp sieve
 postmaster_address = {{ POSTMASTER }}@{{ DOMAIN }}
-hostname = {{ HOSTNAME }}
+hostname = {{ HOSTNAMES.split(",")[0] }}
 mail_plugins = $mail_plugins quota
 submission_host = smtp
 

postfix/conf/main.cf

@@ -4,7 +4,7 @@
 
 # Main domain and hostname
 mydomain = {{ DOMAIN }}
-myhostname = {{ HOSTNAME }}
+myhostname = {{ HOSTNAMES.split(",")[0] }}
 myorigin = $mydomain
 
 # Queue location