This document provides an overview of proxy subdomains. In cPanel & WHM version 11.42 and later, we modified Apache's configuration to properly use proxy subdomains with Secure Sockets Layer (SSL) protocol.
Proxy subdomain explanation
Proxy subdomains provide access to
cpsrvd over the standard
https ports. They also provide configuration information for mail, calendar, and contact clients. When you create a new account, parked domain, or addon domain, the system automatically creates these proxy subdomains.
We recommend that you access the cPanel, WHM, and WebMail login interfaces via the associated port for the speed advantage. However, certain circumstances require that you use a proxy subdomain instead. The following table compares the advantages of both login types:
The configuration information proxy subdomains
autoconfig proxy subdomains grant programs access to domain configuration settings. Programs access the
|Proxy subdomain||Associated programs|
For more information, read our Thunderbird and Outlook
For more information, read our How to Set Up Calendars and Contacts documentation.
The following table lists the proxy subdomains with their associated port:
In cPanel & WHM version 62, we expanded Domain TLS to handle Server Name Indication (SNI) functionality for proxy subdomains. cPanel & WHM enables SNI functionality by default for SSL certificates on proxy subdomains. For more information about Domain TLS, read our What is Domain TLS documentation.
|Subdomain||Secure port||Non-secure port|
SSL only secures the
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