[CentOS] sendmail security

Wed Sep 20 12:49:19 UTC 2006
Les Mikesell <lesmikesell at gmail.com>

On Wed, 2006-09-20 at 05:12, abhishek singh wrote:
> yes i am using SMTP Authentication , but when i m
> doing telnet to my server on 25 port so i am able to
> send mail by unknow user that in in not my mail server
> like
> mail from: <abs at domain.com>
> this command is showing Sender is ok while its not
> user in my mail server.after that 

The stock Centos configuration should reject everything
that doesn't come from the localhost unless you make
changes to /etc/mail/access to permit it.  Are you
doing this test from the local host?

  Les Mikesell
   lesmikesell at gmail.com