Thunderbird auto-configuration XML
This field allows you to customize the XML that is returned to mail clients that access the URL path /mail/config-v1.1.xml?emailaddress=user@example.com on a domain using this template. Clients like Thunderbird can use this XML to automatically configure the mail server hostname, login, port, protocol and username, based on the email address.

The default XML generated by Virtualmin will work fine in most cases, but in some situations you want to change the IMAP or SMTP server names, or other settings. In the template, you can use standard substitutions like ${DOM} and ${IP}, which will be replaced by the domain's name and IP address when used.

Other variables that can be used in the XML are :