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This document is for a previous release of cPanel & WHM. To view our latest documentation, visit our Home page.

For cPanel & WHM 11.40

( Home >> Server Configuration >> Tweak Settings )

 

Overview

These items pertain to the configuration of addon, parked, and subdomains.

 

Allow users to park subdomains of the server's hostname

This item lets you allow users to park subdomains on your server’s main domain.

For example, if your server's main domain name is example.com, if you click On a user would be allowed to redirect user.example.com visitors to that user’s website.

To make your selection, click the button that corresponds to the option you wish to use. This value defaults to Off.

 

Allow domain parking across accounts

This item lets you allow users to park domains on top of other users’ domains. We strongly recommend that you do not enable this option.

To make your selection, click the button that corresponds to the option you wish to use. This value defaults to Off.

 

Allow Remote Domains

This item lets you allow cPanel users to create parked and addon domains that resolve to other servers.

To make your selection, click the button that corresponds to the option you wish to use. This value defaults to Off.

Warning:

We strongly recommend that you do not enable this option. It can cause serious security issues.

 

Allow resellers to create accounts with subdomains of the server's hostname

This item lets you allow resellers to create accounts with subdomains of your server’s main domain. For example, if your main domain name is example.com, enabling this option would allow a reseller to redirect user.example.com visitors to the reseller’s website.

To make your selection, click the button that corresponds to the option you wish to choose. This value defaults to Off.

 

Allow unregistered domains

This item allows you to let users create domain names on the server that are not registered with a valid registrar.

Click the button that corresponds to the option you wish to choose. This item defaults to Off.

 

Automatically add A entries for registered nameservers when creating a new zone

This item allows you to specify whether the server should automatically create A entries for a new domain's registered nameservers when the domain is created.

To make your selection, click the button that corresponds to the option you wish to choose. This value defaults to On.

 

Prevent cPanel users from creating specific domains

You can prevent the creation of certain domains when you list the domain names in the /var/cpanel/commondomains file.

If you enable this feature, cPanel users cannot create (as an addon or parked domain) any domain that is listed in either that file or /usr/local/cpanel/etc/commondomains.

Important:

You should not edit the /usr/local/cpanel/etc/commondomains file directly. If you do, your changes will be overwritten whenever cPanel & WHM updates.

 

Check zone syntax

This option allows you to have the server automatically check zone file syntax whenever DNS zone files are saved or synced.

To make your selection, click the button that corresponds to the option you wish to use. This value defaults to On.

 

Check zone owner

This option allows you to have the server automatically check a DNS zone’s owner whenever DNS zone files are saved or synced.

To make your selection, click the button that corresponds to the option you wish to use. This option defaults to On.

 

Enable DKIM on domains for newly created accounts

DKIM (DomainKeys Identified Mail) helps verify the sender and integrity of a message. It allows an email system to prove that a message was not altered in transit and was not forged), and that the message came from the specified domain.

This option allows you to specify whether DKIM should be enabled for new accounts by default. This value defaults to On.

 

Enable SPF on domains for newly created accounts

SPF (Sender Policy Framework) is designed to deny spammers the ability to send email when they forge your domain’s name as the sender (spoofing). This authentication function adds IP addresses to a list to specify computers that are authorized to send mail from your domain name. It verifies that messages sent from your domain come from the listed sender, which reduces the amount of backscatter you receive.

This option allows you to specify whether SPF should be enabled for new accounts by default. This value defaults to Off.

 

DNS request management application

This item allows you to specify the application that the server should use to handle DNS management requests. This value is set to dnsadmin, auto-detect SSL by default.

To specify a new application:

  1. Select the button next to the text box.
  2. Enter the path to the application you wish to use.

 

Proxy subdomains

This option will automatically redirect visitors to the correct port when they access the following subdomains (example.com stands for the user's domain name):

  • cpanel.example.com redirects to the user's cPanel interface.
  • webmail.example.com redirects to the user's webmail.
  • webdisk.example.com redirects to the user's Web Disk.
  • whm.example.com redirects to the user's WHM interface.

To make your selection, click the button that corresponds to the option you wish to choose. This option is set to On by default.

Important:

  • The options that you select in the Tweak Settings Redirection section do not apply to proxy subdomains.
  • When you enable this feature, it creates an entry in your Apache configuration file (httpd.conf). This feature also requires that you do not manually disable mod_rewrite and mod_proxy in the httpd.conf file.

 

Proxy subdomain creation

Proxy subdomains allow users to reach particular interfaces within cPanel or WHM when they enter a subdomain into a browser. For example, a user who entered cpanel.example.com would reach the cPanel interface for example.com.

Enable this option to allow WHM to automatically create DNS entries for the following subdomains for every user’s account (where example.com stands for the user’s domain):

  • cpanel.example.com
  • webmail.example.com
  • webdisk.example.com
  • whm.example.com

To make your selection, click the button that corresponds to the option you wish to choose. This option is set to On by default.

Important:

You must add DNS entries for these subdomains to work. You may use the /usr/local/cpanel/scripts/proxydomains file to create DNS entries manually.

 

Thunderbird and Outlook autodiscover and autoconfig support (enables proxy subdomain and SRV record creation)

This item will automatically create autodiscover and autoconfig proxy subdomains when you create a domain.

  • autoconfig.example.com
  • autodiscover.example.com

This item will also create the  autodiscover and autoconfig SRV records that are needed for Outlook and Thunderbird email autoconfiguation for local domains.

Note:

If you turn off the Proxy subdomains option, this option will be disabled.

Additional information about Autodiscover and AutoConfig is available for TechNet for Autodiscover and Mozilla's site for AutoConfig.

 

** Preferred mail service to configure to use for Thunderbird and Outlook autodiscover and autoconfig support

This item allows you to choose the email transfer method to use with Thunderbird and Outlook with Autodiscover and AutoConfig support.

We recommend that you use IMAP and not POP3. This option defaults to imap.

Note

You must enable the Thunderbird and Outlook autodiscover and autoconfig support (enables proxy subdomain and SRV record creation) option in order to configure this option.

 

** Host to publish in the SRV records for Outlook autodiscover support.

Microsoft Outlook®’s Autodiscover service searches DNS for an SRV record for an email inbox’s domain that points to a particular server for Autodiscover. By default, this server is cpanelemaildiscovery.cpanel.net.

System administrators can perform the following actions:

  • Choose the host that is published in the SRV records.
  • Change the default host if they have an SSL-enabled host with an SSL certificate signed by a Certificate Authority.
  • Use their own server for Outlook® Autodiscover may enter that server’s FQDN in the available text box.
  • When you enable the Host to publish in the SRV records for Outlook autodiscover support. feature, the server that you specify is queried for the Autodiscover settings. You must have a custom XML file for this feature to function properly.

Notes:

  • For more information about how to use a custom XML file, visit Mozilla's autoconfiguration page, or the Exchange's Autodiscover page.
  • You must enable the Thunderbird and Outlook autodiscover and autoconfig support (enables proxy subdomain and SRV record creation) option in order to configure this option.

More information about Microsoft Outlook®’s Autodiscover feature is available.

 

Overwrite custom A records used for proxy subdomains

If you enable this setting, cPanel will remove any existing custom A records that match proxy subdomains that you create or remove.

Note:

If you turn off the Proxy subdomains option, this option will be disabled.

 

Overwrite custom SRV records used by Outlook AutoDiscover support

If you enable this setting, cPanel will remove any existing custom SRV records when Outlook Autodiscover support is added or removed.

 

Proxy subdomain override

This item lets you allow users to create cPanel, webmail, Web Disk, and WHM subdomains that override automatically generated proxy subdomains.

This means, for example, that a user would be able to direct visitors who access cpanel.example.com to a web page that that user configures, such as mycontrolpanel.example.com.

To make your selection, click the button that corresponds to the option you wish to use. This item’s default value is On.

Note:

Proxy subdomains allow you to enter a subdomain into your browser to reach particular interfaces within cPanel and WHM. For example, entering cpanel.example.comwould reach the cPanel interface for example.com.

 

public_html subdomains only

Enable this option to prevent the creation of subdomains outside of a user's own public_html directory.

To make your selection, click the button that corresponds to the option you wish to use. This item’s default value is Off.

 

Always use authoritative (registered) nameservers when creating a new DNS zone

Enable this option to cause the server to use a new domain's authoritative nameservers (the name servers on record with the domain's registrar). The server will ignore the nameservers that are specified by the user who creates the domain.

To make your selection, click the button that corresponds to the option you wish to use. This value defaults to Off.