If you are using the Conetix SpamExperts spam filter to filter your emails of spam, you may find you need to manually block a sender. In this article we’ll take you through blacklisting either a particular sender or a full domain.


Blacklisting a sender or domain will stop all email from the sender or the domain from reaching you in future.


  1. Access the Spam Experts system via your preferred method:
    If this is a standalone subscription you can access via our Control Panel otherwise you can access via Plesk directly.
  2. Scroll down until you find the section Incoming – Protection Settings and click Sender Blacklist:
    how to blacklist an email or domain in spamexperts
  3. Next Click Add Blacklist Sender:
    how to blacklist an email or domain in spamexperts
  4. If you are blacklisting for only a specific recipient set the local-part to the recipient without their domain name.
    Otherwise we recommend leaving this field blank.


would have a local-part of ‘info’

  1. Under Sender Flag you can choose one of three options shown below:
    how to blacklist an email or domain in spamexperts


Apply to Envelope Sender will apply the blacklisting if the sender matches the address field.
Apply to From: Address is similar to Apply to Envelope Sender but can be different.
Apply to both does both options. We recommend this option.

  1. Enter the email address you would like to blacklist in the address field.
  2. Click Save.

You have now blocked the spammer forever.


If you are looking to blacklist any sender from a domain enter the domain into the address field per the below:

If you’re ever unsure about blacklist and email address please call our friendly support staff for assistance.

Was this article helpful?

Related Articles