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How to protect the Plesk server from incoming spam

Kuzma Ivanov

Updated October 22, 2025 10:15

Plesk for Windows kb: how-to Plesk for Linux ext: pes ABT: Group B

Applicable to:

Plesk for Linux
Plesk for Windows

Question

How to protect the Plesk server from incoming spam?

Answer

Install and configure these Plesk extensions against spam:

Note: Some extensions require a paid license.
- (Linux only) Plesk Email Security (includes SpamAssassin Spam Filter)
- SpamAssassin Spam Filter
- SpamExperts Email Security
(Linux only) Enable greylisting protection and configure it.

Note: Greylisting protection is available on Linux with Plesk Email Security disabled.
Use DKIM, SPF and DMARC protection.
Switch on spam protection based on DNS blackhole lists.

Additional Information

Antispam Tools | Plesk Obsidian Documentation

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