Category: Plesk

May 28, 2020

Sendmail on Plesk – user is not allowed to send mail

I recently ran into a strange problem on a Plesk server where one subscription was inexplicably unable to send email using sendmail (which is what the PHP mail() function uses). The following was being logged in /var/logs/maillog for each attempt: plesk sendmail[1628571]: handlers_stderr: ERROR:__main__:Rejecting message: system user uid='<user ID>’ is not allowed to send mailplesk sendmail[1628571]: handlers_stderr: DATA REPLY:554:5.7.0 Your...

Categories Plesk Comments: 0

June 27, 2014

Parallels Plesk hanging on login

I recently came across a strange problem when setting up a new Windows Server running Parallels Plesk 12. Everything was working fine to being with, and then suddenly Parallels Plesk started behaving strangely. I would select some items in a list and press remove and they would be greyed out as if the AJAX had fired in the background, but...

Categories Plesk/Windows Comments: 0

October 27, 2012

Scheduled backups failing in Plesk 9.5

If you are using MySQL 5.5 with Parallels Plesk 9.5 then you might have noticed that scheduled backups using the built in backup utility have stopped working. Backups manually initiated through the Parallels Plesk control panel interface run normally, but they don’t run automatically on the configured schedule. This is thanks to some compatibility issues between the Parallels “backupmng” tool...

Categories Plesk Comments: 0

October 18, 2012

Blank login page with Parallels Plesk

A recent micro-update from Parallels seems to have broken the login page on some Parallels Plesk servers. In my case, it was a Plesk 9.5.4 server running on Linux. If you look in the Plesk web server (“sw-cp-server”) error log at “/var/log/sw-cp-server/error_log” then you should see entries such as: (mod_fastcgi.c.2582) FastCGI-stderr: PHP Fatal error: Call to undefined function get_failure_redirect_url() in...

Categories Plesk Comments: 0

May 21, 2012

Parallels Plesk Atmail and Error: Password file could not be found

When logging into the Atmail webmail interface used by Parallels Plesk, you might receive the following error: Error: Password file could not be found If you take a look in the log files for the Atmail vhost (/var/log/atmail/error_log) then you should see something along the lines of: PHP Warning: file_exists() [function.file-exists]: open_basedir restriction in effect. File(/etc/psa-webmail/atmail/.atmail.shadow) is not within the...

Categories Plesk Comments: 0

February 11, 2012

Missing Parallels Plesk for Linux updates

If you’re using Parallels Plesk 9.x with Postfix as the MTA, there appears to be a bug which can stop Plesk from displaying important updates that are available, including the micro-updates which provide important bug fixes and security updates. If you are using the Updates section of the Plesk web interface, then no error message is displayed, so it just...

Categories Plesk Comments: 0

February 6, 2012

Regenerate statistics in Parallels Plesk for Linux

Every night Parallels Plesk for Linux servers run a cron job to process various log files and generate statistics. This includes generating the HTML for the AWStats or Webalizer log analysis packages used for the Plesk “web statistics” features as well as updating the disk usage and bandwidth usage for each domain. Sometimes you need to re-run this task, such...

Categories Linux/Plesk Comments: 0

September 29, 2011

Unable to send attachments in Horde

I recently came across a bizzare issue in the version of Horde webmail shipped with Parallels Plesk 9.5.2 where it would allow you to attach files to an e-mail you are composing, but when you send the e-mail the attachment never arrives. Sending the same attachment via the Atmail webmail client or a traditional SMTP client wasn’t a problem and...

Categories Plesk Comments: 0

June 27, 2011

Parallels Plesk and Atomic Secured Linux

If you are experiencing HTTP 500 Internal Server Error messages from the license management part of the Parallels Plesk control panel when running on Atomic Secured Linux, then you are probably running into some buggy anti-reverse engineering code that Parallels have built into the Plesk software. It seems that Parallels are using ptrace to determine if someone has attached a...

Categories Plesk Comment: 1

February 9, 2011

Parallels Plesk 9 and SSL certificates signed by an intermediate Certificate Authority (CA)

Parallels Plesk 9 doesn’t seem to like installing certificates signed by an intermediate Certificate Authority (which is becoming more and more common and will be all certificates in the next year or two) through the SSL certificates part of the Plesk interface available to both administrators and end users. A work around to this seems to be to install the...

Categories Plesk Comments: 0