Support Center > Knowledgebase > Plesk

• After upgrade from Parallels Plesk Panel 9.0.0 update1 to 9.0.0 update2 mail message headers have incorrect structure

  Symptoms: After upgrade from Parallels Plesk Panel 9.0.0 update1 (release) to Parallels Plesk Panel 9.0.0 update2 (package psa-hotfix4-9.0.0) mail...

• Backup structure in Parallels Plesk Panel 9

  Since version 9.0.0 structure of Plesk backup has been changed. Each backup consists of .xml - backup metadata files, . - archived backup files...

• Can I accommodate more than one domain names in my hosting plan?

  You can accommodate more than one domain with two different forms: 1. Parked Domains Installation of a domain name so when it's requested, it...

• Can I accommodate more than one domain names in my hosting plan?

  You can accommodate more than one domain with two different forms: 1. Parked Domains Installation of a domain name so when it's requested, it...

• Cannot add new rule to firewall: "proc_close() failed: mktime() [function.mktime]"

  Symptoms: Parallels Plesk Panel version 9.0.1 is installed. The following error occurs when try to add new firewall rule through Parallels...

• Cannot edit crontab through Parallels Plesk Panel: Object not found

  Symptoms: Parallels Plesk Panel 9.0.1 is installed. I cannot edit existent crontab for system users through Parallels Plesk Panel. The error...

• Cannot register Parallels Plesk Sitebuilder in Parallels Plesk Panel

  You may get the following errors when try to register Parallels Plesk Sitebuilder server in Parallels Plesk Panel 8.x via Server -> Sitebuilder...

• Commands are listed in knowledge base contain variables like $PRODUCT_ROOT_D, $HTTPD_VHOSTS_D, etc... How do I find their values ?

  Paths to various components used by Parallels Plesk Panel may vary depending on product version and operating system. Because of this in many...

• Enabling PHP FastCGI application produces 403 Forbidden error

  Symptoms In Parallels Plesk Panel 9.0 some Web Application is installed to document root (/) on domain DOMAIN.TLD through {Domains -> DOMAIN.TLD...

• File extraction with Plesk - unrar - unzip - untar

  Plesk Panel does not have a graphic environment for file extraction. This can be achieved via SSH environment by using an equivalent client...

• High CPU load on Parallels Plesk Panel server after upgrade to 9.2.1 and 9.2.2

  Symptoms: After upgrade you may see many processes "authpsa" which cause high CPU utilization (high "load average") and the server may...

• How can I check that POP3/IMAP Plesk services are running OK on the server ?

  Login to the Plesk server in command prompt and try "telnet localhost 110" (143), if Plesk POP3/IMAP services work an output for login session...

• How can I check that SMTP Plesk service is running OK on the server ?

  For Linux users. Login to the Plesk server and try "telnet localhost 25", if Plesk SMTP works an output should be: # telnet localhost 25...

• How can I do mass IP addresses change in Plesk Control Panel ?

  There is the special utility reconfigurator.pl in Plesk that allows you to change IPs in Plesk base and reconfigure domain settings with new IPs....

• How can I enable Single sign-on feature (SSO) for Parallels Plesk Panel and Parallels Plesk Sitebuilder ?

  Symptoms: There are no options to enable SSO in admin interface for Parallels Plesk Panel and Parallels Plesk Sitebuilder. How do I enable the...

• How can I migrate objects from Parallels Plesk Panel version 7.5 or 8.6 to Parallels Plesk Panel 9 ?

  Plesk Migration Manager (PMM) does not exist in Parallels Plesk Panel Beta, Plesk 9 Release and the first patch 9.0.1. The feature is under...

• How can I upload files in my hosting account via FTP?

  To upload your files, you have to follow this steps: • Open your FTP program (if you do not have an FTP program you can download Filezilla from...

• How do I block individual email accounts from sending mail to the server ?

  This can be done by adding the account to the badmailfrom file located in the /usr/local/psa/qmail/control/ directory for the standard build and...

• How do I change Sitebuilder URL in Parallels Plesk Panel ?

  Symptoms: On page Sitebuilder System Administrator's preferences in Parallels Plesk Panel {Server -> Sitebuilder Support} for version 8 and {Home...

• How do I change virtual hosts location in Parallels Plesk Panel for Unix ?

  For Parallels Plesk Panel (hereafter Plesk) version v8.0 and above see the article #1186 Plesk takes all storage paths from /etc/psa/psa.conf...

• How do I configure interface components in Parallels Plesk Panel 9 ?

  Symptoms: Parallels Plesk Panel 9 has huge number of buttons on Home page. How do I hide some of them? Resolution: Plesk administrator...

• How do I limit the maximum children for spamd? For if there is a large spam attack - too many processes are started and the system can run out of resources.

  In Plesk 7.5 and 8.0 you can limit the number of simultaneously running SpamAssassin processes with 'SPAMASSASSIN_MAX_CHILDREN' option in...

• How do I rebuild qmail queue if it is damaged or consists of a lot of spam messages ?

  This instruction is written for RPM-based systems (RedHat, Fedora, CentOS, etc...). Please perform the following steps to recreate Qmail`s...

• How do I repair/rebuild all mail configuration files and restore settings for all mailboxes ?

  This can be done with Plesk mchk utility: # /usr/local/psa/admin/sbin/mchk --help Synopsis: mchk [OPTION] --without-spam - restore all...

• How do I restart Apache ?

  You may restart Apache service via Services management page in Parallels Plesk Panel: Parallels Plesk Panel 8.x: System -> Server -> Services...

• How do I set SSL certificate for Plesk installed inside a Virtuozzo container ?

  NOTE: This article is for Virtuozzo 2.6x/3.x/4.x systems with Parallels Plesk Control Panel 7x./8.x/9.x Containers. For the details on...

• How does Plesk generate SOA-Record for DNS zones ?

  Parallels Plesk Panel (hereafter Plesk) generates SOA records the following way: - TTL, Refresh, Expire and other records are set to values...

• How should I partition the hard drive prior to installing Plesk ?

  We cannot give any exact numbers, however, you should take into account the following. Plesk for Linux OSes stores all users' data in /var...

• How to convert backup from older version of Parallels Plesk Plesk to version 9

  Symptoms Parallels Plesk Panel Backup/Restore functionality was redesigned in Plesk 9 version. Prior restoration data with use of an old backup...

• How to define what MTA is used in Parallels Plesk Panel and how to switch from Qmail to Postfix and vice versa ?

  Symptoms: There are two Message Transfer Agents (MTA) supported by Parallels Plesk Panel version 9, they are Qmail and Postfix. Each time only one...

• How to disable integration with Parallels Plesk Sitebuilder and remove submenu "Sitebuilder" from Plesk Control Panel ?

  Symptoms: There is submenu Sitebuilder in Parallels Plesk Panel that leads to managements pages of Sitebuilder sites and users. How do I remove...

• How to enable remote access to your PostgreSQL server ?

  The default configuration of PostgreSQL does not allow incoming connections from external machines. This implies that no external application can...

• How to enable Sitebuilder support for domains in Plesk 8 and Plesk 9 ?

  You need to register Parallels Plesk Sitebuilder in Parallels Plesk Panel. To configure integration you should login to Parallels Plesk Panel as...

• How to include domain-specific Apache configuration directives into web server configuration file ?

  You can include domain-specific Apache configuration directives into web server configuration file. In Parallels Plesk Panel each domain has...

• How to install custom SSL certificate on SSO server ?

  Symptoms: SSO server sso.server is registered in Parallels Plesk Panel 9 and SSO mode enabled. You may check this with Plesk utility sso: ~#...

• How to migrate Parallels Plesk Panel 9 using GUI Backup Manager ?

  Since version 9.0 structure of Parallels Plesk Panel backup has been changed. Plesk backup created with Plesk Backup Manager is not just one file...

• How to migrate Plesk data manually with Plesk Migration Manager ?

  To do this follow the steps below: Upload migration agent and modules to the source server. For example for Parallels Plesk Panel, there are...

• How to recompile Apache,PHP and IMAP with increased value of file descriptors larger than FD_SETSIZE (1024) on RedHat-like system ?

  Symptoms: RPM packages are compiled by vendors with too small (1024) number of file descriptors and it might cause the following messages to...

• I am unable to retrieve the license key. I am getting the following error: "Licensing Server Unreachable: Unable to connect with licensing server"

  Symptoms: Parallels Plesk Panel is unable to retrieve license key. The following error appears when click button "Retrieve Keys" on the License...

• I can not login to Webmail receiving error: "A fatal error has occurred DB Error: connect failed"

  Symptoms You get the following error during attempting to login into Webmail: A fatal error has occurred DB Error: connect failed...

• I cannot understand how to upload the files of my website in my hosting account. Can you upload them for me?

  We can help you upload your files. In order to do that, you have to: Compress your websites’ files and folders in a zip or rar file. Visit...

• I cannot send any mail from the server even via command line. The following error occurs: "PERM_FAILURE: SMTP Error (state 13): 554 mail server permanently rejected message (#5.3.0)"

  Symptoms: The following headers are bounced back during the test: Delivery to the following recipient failed permanently: test@domain.com...

• I cannot upgrade Parallels Plesk Panel using autoinstaller because package of newer version is installed

  Symptoms: I cannot upgrade Parallels Plesk Panel using autoinstaller because package of newer version is installed. For example, I try upgrading...

• I get an "open_basedir" error in PHP script. How can I fix it ?

  Cause: This error means that PHP script tries to access a folder access to which is not allowed. For security reasons, PHP options for domains...

• I get the bounce message which states that the mail cannot be delivered to the destination address because of MX or A records for the domain point to local Plesk server but there is no such domain in Qmail control files.

  Symptoms: You get bounce message like below or similar errors present in maillog: : Sorry. Although I'm listed as a best-preference MX or A for...

• I get the error: "Could not connect to SQL database. Too many connections".

  Symptoms: Sometimes I get the "Too many connections" error in Plesk CP or when open a site in my browser: Unable to connect to database: Too...

• I receive a wrong certificate when I open any domain via HTTPS. I added the certificate under server settings, assigned this certificate to an IP, set default domain for the IP and restarted Apache. But if I open https://domain.tld I still get a localhost.localdomain (or another) default certificate.

  Look into /etc/httpd/conf.d/ssl.conf for the line like: If it exists you have to delete/comment this default SSL virtual host starting from...

• I see that some messages are staying in queue. How to force Qmail to process all messages in queue immediately ?

  Symptoms: Mail can be sent and received fine, but some messages are staying in queue: # /var/qmail/bin/qmail-qstat messages in queue: 37...

• Incorrect header for incoming or outgoing messages when SPF spam protection is switched on

  Symptoms: It is Parallels Plesk Panel version 9.0.0 installed and SPF spam protection enabled in server-wide mail preferences {Home -> Mail Server...

• Integration of external Parallels Plesk Sitebuilder with Parallels Plesk Panel 9.0.1 causes error "Auth header is missed"

  Resolution: By default Parallels Plesk Panel uses local Parallels Plesk Sitebuilder. The configuration is set in Plesk database. However you...

• Is it possible to limit a number of recipients in a mail message in Parallels Plesk Panel ?

  Since Parallels Plesk Panel version 8.4 it is possible to limit maximum number of recipients for email message. To prevent your users from sending...

• Is it possible to upgrade Apache to the latest versions from OS update ?

  Parallels Plesk Panel versions 7.x and 8.x uses its own Plesk Apache service that serves Control Panel. Parallels Plesk Panel 9.x uses sw-cp-server...

• Is it safe to update system packages using the operating system package manager ?

  Yes, it is safe and moreover we recommend to use 'yum' (or 'apt-get' on Debian) to keep the system up-to-dated. However some packages may...

• It seems difficult to create my personal email accounts. Can you create them for me?

  We can help you create your personal email accounts, by following these steps: Connect to the Control Panel service in the web address...

• Logout URL in Parallels Plesk Billing does not match new hostname

  Symptoms: Parallels Plesk Panel and SSO server are running on the same server and integrated. That means Parallels Plesk Panel is registered in...

• Mail cannot be send to a particular domain. There is error: "TLS connect failed".

  Error message: Hi. This is the qmail-send program at mail.domain.tld. I'm afraid I wasn't able to deliver your message to the following...

• Many email messages are sent from PHP scripts on the server. How can I find what domains these scripts are running on ?

  There is a way to find what the folder the PHP script that sends mail was run from. Note, the paths can be slightly differ from the listed below...

• Microsoft FrontPage 2002 Server Extensions for UNIX has been End-of-Lifed.

  Microsoft FrontPage Server Extensions (FPSE) for UNIX are no longer available for download and cannot be distributed, according to...

• New variable PLESK_LIBEXEC_DIR was introduced in Parallels Plesk Panel 9

  New variable PLESK_LIBEXEC_DIR was introduces in Parallels Plesk Panel version 9.0. The variable indicates directory where internal utilities are...

• Outgoing mail from Domain Aliases is not signing with DomainKeys

  Symptoms: Mail messages sent from Domain Aliases are not signed with DomainKeys. The message header looks like the following:...

• Parallels Plesk Panel 9 and Parallels Plesk Expand 2.3. Are they compatible ?

  If Parallels Plesk Panel is registered in Parallels Plesk Expand it is not recommended to upgrade the panel to version 9.x. Parallels Plesk...

• Parallels Plesk Panel uses patched Qmail. How do I compile Qmail with my own patches ?

  You should download Qmail sources, for example from http://qmail.org/, apply Plesk patches which are attached to this article, apply your own...

• Parallels Plesk Panel uses patched Qmail. How do I compile Qmail with my own patches ?

  You should download Qmail sources, for example from http://qmail.org/, apply Plesk patches which are attached to this article, apply your own...

• Plesk Migration Manager is missing in Parallels Plesk Panel 9.0

  Parallels Plesk Panel Beta, Plesk 9 Release and the first patch 9.0.1 do not include Plesk Migration Manager. The utility is under development...

• Plesk server is running as primary DNS server. How can I setup a secondary (slave) DNS server ?

  At first you should allow zone transfer for the secondary DNS server in Plesk. To allow it, secondary DNS server's IP should be listed in NS...

• Plesk session is dropped if client’s IP is being changed

  Symptoms: Plesk users are using internet connection with dynamic IP which changes on every request. Plesk Panel drops their sessions for security...

• Plesk – Subdomain Redirection

  By creating a sub domain (sample.domainname.com) using the Plesk control panel, you automatically create, on the root of your hosting plan, a...

• Postfix cannot send e-mails with attachments

  Symptoms: Parallels Plesk Panel version 9.0 is running with Postfix MTA. E-mails with big attachments cannot be sent from the server. The...

• Postfix segfaults upon postfix-queue execution when processes message with strings of more than 4096 characters

  Messages that contain a string of more than 4096 characters cannot be delivered. The following error is shown in maillog:...

• Server backup repository

  Symptoms: Where Server Backup Repository is located? Resolution: Since Parallels Plesk Panel version 9.0 structure of server backup repository...

• SSL certificate used by Parallels Plesk Panel has expired. How can it be renewed ?

  Symptoms: When open Parallels Plesk Panel control panel or any site via HTTPS the waring about expired certificate is shown. How to renew it?...

• The server is saturated with SPAM. There are many messages in the queue. The mail is sent slowly.

  First check that all domains have the option 'Mail to non-existing user' set to 'reject' but not to 'forward'. You can change this setting to all...

• Upgrade fails with the "Failed to check whether a new license key is available" error.

  Symptoms: I run upgrade using Autoinstaller but it stops with the error, even if the license is up to dated: ERROR: Failed to check whether a...

• We have recently moved a customer to the Plesk server. I have dumped the contents of his MySQL database. How can we make the database accessible to the client from their Plesk CP.

  Login to Parallels Plesk Panel and create an empty database with name similar to client's database (): Domains -> "domain name" -> Databases ->...

• What do notifications from "spf filter" mean ?

  Symptoms: SPF spam filter is enabled in server-wide mail preferences {Home -> Mail Server Settings -> Switch on SPF spam protection}. The...

• What is the Plesk PowerPack?

  The Plesk PowerPack is a high quality pack of add-ons for Plesk control panel. PowerPack contains the following features: Monitor and Manage...

• When enable SPF spam protection in server-wide mail preferences, Postfix stops working

  Symptoms: It is Parallels Plesk Panel version 9 installed and Postfix MTA used. When switch on SPF spam protection in server-wide mail...

• When php is upgraded to php5 on Debian, the Plesk panel goes down.

  Symptoms: If you try to upgrade libapache2-mod-php4 to libapache-mod-php5 package, apt-get tries to remove package psa with all dependencies,...

• Which ports need to be opened for all Plesk services to work with a firewall ?

  Generally it depends on what services are running on the server. All the ports which can be used by Plesk/services are listed below: 20...

• Would email messages be lost when switch from Qmail to Postfix and vice versa ?

  Symptoms: I plan to switch from Qmail to Postfix or vice versa in Parallels Plesk Panel. Will my EMail messages or queue be lost during the...