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 How can I fix the error: The licensing server was invalid or could not be reached ?

Restart Plesk Panel Interface 1. Many times this error can be fixed by just restarting the Plesk...

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Check the Status of the ClamAV Daemon You can check the ClamAV daemon status under the...

 How can I switch to iptables-nft from nftables after upgrading Debian or Ubuntu?

ConfigServer Security & Firewall (csf) currently supports using iptables interface so when...

 How can I reissue my license if my servers IP address changes?

On activation the license is locked to your servers IP address. If your IP address changes you...

 How can I fix the error: Client host [XXX] blocked using zen.spamhaus.org; Error: open resolver;

SpamHaus RBL is blocking all email if your server is using an open resolver. For example, public...