How to prevent email spoofing

[codehaxor]

I currently read and followed the guide on how to prevent email spoofing but it does not work. I can still login as anonymous user from telnet and send emails to other users in the domain.

How can i prevent this?

I tried setting ANONYMOUS Reject ALL but I could send only emails but I cannot receive.

[ScalixSupport]

Can you be more specific as to what you're trying to accomplish and could you post your smtpd.cfg file?

Thanks,
Rachel

[simba]

hi,

got exactly the same issue here... Already any ideas how to fix this?

Code: Select all

ANONYMOUS Log_Reject *@example.com

doesnt work for us at all.

greetz

[adhodgson]

Hi,

What you are discussing is an inherrant "feature" of the SMTP protocol. There is nothing from stopping me, an external user, from sending a message that looks as though it came from one of your senders, and your company.

Andrew.