unknown email sending from [email protected] to [email protected] but rejected

[Azeemeo]

Dear,

For the last few days, I have seen some unknown emails that are trying to send remotely but have been rejected. I don't know why this is happening. Please check the screenshot and guide me on how I can stop this to protect my IP for listing.

 

[cPRex]

Hey there! This is likely just a fake email that was sent from somewhere else using your hostname so you would receive the bounceback. Since the sender IP isn't your server, this seems like the most likely scenario.

There isn't much you can do about this, but the details outlined here are the best way to prevent multiple types of fake messages, and would apply to this situation as well: https://support.cpanel.net/hc/en-us/articles/360050002274-Preventing-spoofed-emails