RE: Help! Someone is using my postfix!

[aljuhani <aljuhani zajil net>]

Hello,

You may have an open relay mail server (smtp).  Port 25 is always open to 
receive messages to local users.  If the spammer is using your SMTP as a 
gateway to send messages to outside domains (outside your box) then you have 
an open relay SMTP.  You need to use pop before smtp i.e. local users must 
first check thier mails (authenticate) before given access to send email 
through SMTP.

If the spammer is sending mails to your local users within your box, then you 
need to apply reject rule to the spammer IP Address, Email Address, or domain 
name.

Al-Juhani
aljuhani zajil net

>===== Original Message From redhat-list redhat com =====
>Help! Someone is using my postfix server to send sex SPAM! The worst part is 
the fact that I have ALL PORTS closed! How did they get past that? What can I 
do to stop it firewall wise and postfix config wise?
>
>Please help me stop SPAM. Thank you.
>
>
>
>nick marsh
>nmarsh1 mac com
>