System is sending Spam emails

[thanasis]

Hello, i noticed that [System] sending spam emails at .ru and .qq emails.
I have lots of them at mail queue...
So, i deleted them, but i want to find the reason... What caused these message...

Thank you.

 

[keat63]

Could this be your system replying to a message from the .ru and .qq domains.

Maybe these domains have spammed your server, and your server has rejected them with a bounce message ?

 

[thanasis]

I found a domain causing this problem.
How can i stop this domain sending emails at this tdls?

 

[Volox]

Terminate the account of the offending user. Or if their account might have been compromised, perhaps force rotate their password.

 

[cPanelMichael]

I found a domain causing this problem.
How can i stop this domain sending emails at this tdls?

Hello @thanasis,

There's a thread here with discussion of blocking outgoing email to a specific TLD, however generally the better approach is to address the source of the SPAM. Can you share more information about the offending account? For instance, were the emails sent using SMTP authentication or through a PHP script?

Thank you.