|PHP-FPM service for Apache|
This daemon improves the performance of EasyApache 4's PHP-based internal applications.
- This option is only available on systems that use EasyApache4.
- You cannot install or remove the PHP-FPM daemon in this interface. You must use the EasyApache 4 interface (WHM >> Home >> Software >> EasyApache 4).
|PHP-FPM service for cPanel Daemons|
This daemon improves the performance of PHP-based internal applications that ship with cPanel & WHM, such as:
- Any third-party PHP application that the user installs.
This service will accelerate a maximum of ten concurrent processes per user.
This daemon scans your server for malicious programs.
To install or uninstall ClamAV, use WHM's Manage Plugins interface (WHM >> Home >> cPanel >> Manage Plugins).
This daemon enables IMAP Full-Text Search (FTS) Indexing (powered by Apache Solr™), which provides fast search capabilities for IMAP mailboxes.
For more information about this service, read our The install_dovecot_fts Script documentation.
To install or uninstall IMAP Full-Text Search (Powered by Apache Solr), use WHM's Manage Plugins interface (WHM >> Home >> cPanel >> Manage Plugins).
|cPanel DAV Daemon |
This daemon enables a set of HTTP extensions that allow users to manage their websites remotely.
If you plan to host other people’s websites on your web server, do notdisable this daemon.
|cPanel Greylisting Daemon |
This daemon manages Greylisting, a service that protects your server against spam from sources that your server does not recognize. For more information, read our Greylisting documentation.
|cPHulk Daemon |
This daemon manages cPHulk Brute Force Protection, a service that protects your server against spam from sources that your server does not recognize.
|Cron Daemon |
cron scheduling daemon. For more information, read our Cron Jobs documentation.
|cPanel DNS Admin Cache |
This daemon runs as a standalone daemon. This improves speed, but increases it memory usage. Deselect this option if you wish to use multiple
dnsadmin processes for zone-related actions.
|Exim Mail Server |
The SMTP mail server daemon is the part of your mail server that sends and receives mail. We recommend that you monitor and enable this feature for most servers.
If you disable this service, the following options do not appear in the Mail section of WHM's Tweak Settings interface (WHM >> Home >> Server Configuration >> Tweak Settings):
- Discard FormMail-clone message with bcc:
- Email delivery retry time
- Track email origin via X-Source email headers
- Max hourly emails per domain
- The percentage of email messages (above the domain's hourly maximum) to queue and retry for delivery.
- Maximum percentage of failed or deferred messages a domain may send per hour
- Number of failed or deferred messages a domain may send before protections can be triggered
- Add X-PopBeforeSMTP header for mail sent via POP-before-SMTP
- Enable BoxTrapper spam trap
- Enable Email Archiving support
- Enable Apache SpamAssassin™ spam filter
|Exim Mail Server (on another port) |
By default, Exim listens to the following ports:
This option allows you to configure Exim to listen to an additional port.
In the text box, enter the additional port number on which you wish to allow Exim to run.
|FTP Server |
The FTP server daemon runs your FTP server. Enable this feature if you plan to host other people’s websites on your web server.
We strongly recommend that you monitor this feature.
|Apache Web Server |
The Apache web server daemon processes HTTP requests from visitors. Enable this feature to host websites with your web server.
|IMAP Server |
The IMAP daemon for Dovecot processes how your users download their mail.
We strongly recommend that you monitor this daemon.
For more information, read our IMAP vs. POP3 documentation.
|IP Aliases |
This feature allows you to add more than one IP address to your network adapter. Use this configuration to run multiple connections on a single network, where each connection serves an additional purpose.
The Local Mail Transport Protocol (LMTP) server allows Exim to connect to the Dovecot mail server.
The Mailman mailing list manager allows your users to create a single email address to send mail to multiple email addresses. For more information, read our Mailing Lists documentation.
|MySQL Server |
The MySQL® database server processes database queries. If you plan to host any content management systems or applications that require a database, enable this feature or the
We recommend that you monitor this daemon. The system does not monitor this daemon by default.
|DNS Server |
The Berkeley Internet Name Domain (BIND), NSD, PowerDNS, or MyDNS daemon runs the nameservers.
You should only enable this daemon if you wish to use your own nameservers. For more information, read our Nameserver Selection documentation.
|Name Service Cache Daemon |
This daemon manages a cache for name service requests.
We strongly recommend that you only enable this service on servers with at least 1,000 MB of available memory.
|Passive OS Fingerprinting Daemon |
The Passive OS Fingerprinting daemon (
p0f) reports the visitor's operating system and other information for email notifications that the system administrator requests in WHM's Contact Manager interface (WHM >> Home >> Server Contacts >> Contact Manager). This information helps a system administrator quickly identify visitors that trigger events that cause alerts.
For example, if a user logs in to a server from multiple locations and uses multiple operating systems, this may indicate that someone has compromised the user's account.
Also, the spam prevention and cPHulk systems use this information to identify potential spammers and brute force attacks.
If you disable this daemon, the notification footers will no longer contain the visitor information.
For more information about this daemon, read the Passive OS Fingerprinting documentation at github.
|POP3 Server |
The POP3 daemon processes how your users will download their mail.
We strongly recommend that you monitor this daemon. The system does not monitor this daemon by default.
|PostgreSQL Server |
The PostgreSQL® database server processes database queries. If you plan to host any content management systems or applications that require a database, enable this feature or the
|Apache SpamAssassin™ |
The Apache SpamAssassin™ daemon attempts to filter spam messages. If you disable this daemon, make sure that you also disable it in WHM's Tweak Settings interface (WHM >> Home >> Server Configuration >> Tweak Settings).
|SSH Daemon |
The secure shell (SSH) daemon allows users to connect to your server in a terminal session via SSH.
|rsyslog System Logger Daemon |
The system log daemon monitors your web server and logs the system activity.
We strongly recommend that you enable this daemon.