How to Block or Filter Emails Triggering "Read Receipt" to Specific Address (cpanel/Exim)

microvax

• September 08, 2025 22:04

Hello,

I am experiencing an issue with my cPanel mail server (using Exim) where some of my users are receiving emails from various senders, but all of these messages have something in common: they request a delivery or read receipt to the following address: greesegreese133@gmail.com.

This triggers return receipt requests and causes bounce errors for my users, since they have enabled delivery/read receipts in Outlook.

What I would like to know:

• Is it possible to create a global filter (via cPanel or Exim) that blocks, redirects, or automatically deletes any incoming message that has this specific email address in the return receipt request (i.e., “greesegreese133@gmail.com” in RCPT TO, header, or body)?

• Would this affect legitimate traffic or are there best practices to avoid collateral blocking?

• Is there a recommended method in cPanel for managing this scenario (global email filters, Exim custom rules, etc.)?

Additional details:

• The server is running standard cPanel with Exim as the mail server.

• The source email and subject of the messages vary, but the common point is the confirmation request (read receipt goes to greesegreese133@gmail.com).

Any advice or best practices would be greatly appreciated!

 

• 

  cPRex Jurassic Moderator

  • September 09, 2025 14:18

  Hey there!  Does the "Any Header" option in the filter drop down not catch this?  Have you tried that?

  

   

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