config.xml

<?xml version="1.0" encoding="UTF-8"?>
<config>
  <domain>example.com</domain>
  <displayname>Example Mail</displayname>
  <displayshortname>Example</displayshortname>
  <usePop>false</usePop> <!-- true if you use POP3, otherwise false -->
  <pop>
    <server>mail.example.com</server> <!-- POP3 server IP or address -->
    <port>110</port> <!-- 110 for unencrypted, 995 for encypted trafic -->
    <loginname>email</loginname> <!-- email for entire email+domain, username for the part before the @ character -->
    <encryption>none</encryption> <!-- none, ssl or starttls -->
    <password>unencrypted</password> <!-- unencrypted or encrypted -->
  </pop>
  <useImap>true</useImap> <!-- true if you use IMAP, otherwise false -->
  <imap>
    <server>mail.example.com</server> <!-- IMAP server IP or address -->
    <port>993</port> <!-- 143 for unencrypted, 993 for encypted trafic (IMAPS) -->
    <loginname>email</loginname> <!-- email for entire email+domain, username for the part before the @ character -->
    <encryption>ssl</encryption> <!-- none, ssl or starttls -->
    <password>unencrypted</password> <!-- unencrypted or encrypted -->
  </imap>
  <smtp>
    <server>mail.example.com</server> <!-- SMTP server IP or address -->
    <port>587</port> <!-- 25 for unencrypted SMTP, 465 for encypted SMTP or 587 for submission -->
    <loginname>email</loginname> <!-- email for entire email+domain, username for the part before the @ character -->
    <encryption>starttls</encryption> <!-- none, ssl or starttls -->
    <password>unencrypted</password> <!-- unencrypted or encrypted -->
  </smtp>
  <autodiscoverAddress>https://autoconfig.example.com</autodiscoverAddress> <!-- the socket/virtual host which provides /autoconfig/autoconfig.xml -->
</config>