stop email spoofing

[lldeepakll]

Hi,

I am facing the same issue as mentioned at below thread. I tried to reply on this thread but it is not allowing me to reply to this thread. So I have opened a new thread.

http://forums.cpanel.net/f43/spoofing-mail-my-server-153769.html

" Hello people,

I have a problem with some of my clients. I have some servers and some of my clients send mail authenticating with their mails but using other accounts (out of my clients) as sender, for example:

Client: clientone.com
Authenticate Email: [email protected]
Sender Email: [email protected]

How could I do to take control about mails which go out from my server or even go in from accounts of my clients with characteristics above?

Thank you for your help. "

Can anyone please help how can I stop this on server.


Thanks

 

[Jeff Shotnik]

You can enable Spamassassin outbound email scanning. If the from header in the email is external, and different than the actual sender Spamd should mark it as spam and reject.

 

[mpkapadia]

You need to modify exim advanced settings to accomplish this.
Basically need to put a check that if sender domain is not in local domain file then it should be rejected.

This will do exactly what you want to . This isn't officially cpanel supported though . But would work. Search exim forums as well.