You can find the location of the Qmail log file by viewing the syslog configuration file:
cat /etc/syslog.conf
generally the path to it on a Plesk based CentOS VPS will be:
/usr/local/psa/var/log/maillog
Please note a different control panel may have the logfile in a different location.
Log into your VPS using Remote Desktop.
1. Click the start menu and select “Run”
2. Enter the following command:
“C:\SWsoft\Plesk\admin\bin\plesksrvclient.exe” –get
In order to fix this issue you will be required to disable magic_quotes_runtime and magic_quotes_sybase in the Plesk control panel PHP configuration file “/usr/local/psa/admin/conf/php.ini“.
Enable passive mode for FTP in Plesk Panel
Log in as “root” to the server.
Edit the ProFTPD configuration file.
1. Issue the command vi /etc/proftpd.conf
2. Add the following lines anywhere within the [Global] section:
PassivePorts 49152 65534
3. Save the file
Log in to Parallels Plesk Panel as “admin”, go to Modules > Firewall, and click Edit Firewall Configuration.
Click Add Custom Rule.
Specify the following:
1. Rule name
2. Direction: select Incoming.
3. Action: select Allow.
4. Ports: in the Add port input box, enter the value 49152-65534. Leave the TCP option selected, and click Add.
5. Click OK.
6. Click Activate, and then click Activate again.
Plesk Retrieve keys – open or save ‘key_update.php’
The plesk license key can be retrieved via plesk control panel
Plesk >> Server >> License Management >> Retrieve keys
Sometimes, when you click on “Retrieve keys”, you will get a download prompt to open or save the ‘key_update.php’ file.
Check the log file /usr/local/psa/admin/logs/httpsd_error_log
In case you get the error “xmlrpc_client.c:675: assertion failed”,
Restart Plesk Control Panel to perform correct startup configuration.
# /usr/local/psa/admin/bin/httpsdctl stop
# /usr/local/psa/admin/bin/httpsdctl start
# /etc/init.d/psa stop
# /etc/init.d/psa start
If you get the message “Service Unavailable” while accessing Plesk:
Check the EventViewer – Open Administrative Tools >> Event Viewer.
There if you see the following W3SVC-WP (IIS6) error messages:
Could not load all ISAPI filters for site/service. Therefore startup aborted.
OR
The HTTP Filter DLL C:\Program Files\Helicon\ISAPI_Rewrite3\ISAPI_Rewrite.dll failed to load. The data is the error.
To fix this, all you need to do is -
1. Remove filter from IIS manager:
IIS >> Web Sites >>Properties >>ISAPI filters
2. Disable that filter in Web Server Extensions.
3. Restart IIS
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