Honestly the easiest option to me is to put an iptables rule on the mail server which rejects port 587 (you do require smtp auth to run only on port 587, right?) except for 1 IP, that of the webmail server you wish to allow.
...Todd On Wed, Sep 21, 2011 at 9:39 PM, Aneesh Joseph <[email protected]> wrote: > Hello, > > I have a mail server and a web server. I have installed the webmail client > ( custom program ) in the web server. I need to allow Authenticated SMTP > only from this web server. What I mean is that, if I have the email address > and password, I should not be able to send email using my Outlook or any > script from other server. > > Now I have enabled POP before SMTP and disabled POP3 port from all IPs > Except the web server IP. Still people are sending email using SMTP > authentication from remote computer > > Any Idea how to fix this ? Or any suggestion ? > > > Aneesh Joseph | System Administrator | T: +919895012331 | > [email protected] |http://www.hellosystemadmin.com > Chat [image: Google Talk:] aneeshjoseph [image: Skype:] aneeshjoseph > [image: Linkedin] <http://www.linkedin.com/in/aneeshjoseph>[image: > Facebook]<http://www.facebook.com/profile.php?id=595728820>[image: > Orkut] > <http://www.orkut.co.in/Main#Profile?rl=fpp&uid=3496974728077767766>[image: > Twitter] <http://twitter.com/hellosysadmn> > -- > ## List details at https://lists.exim.org/mailman/listinfo/exim-users > ## Exim details at http://www.exim.org/ > ## Please use the Wiki with this list - http://wiki.exim.org/ > -- If Americans could eliminate sugary beverages, potatoes, white bread, pasta, white rice and sugary snacks, we would wipe out almost all the problems we have with weight and diabetes and other metabolic diseases. -- Dr. Walter Willett, Harvard School of Public Health -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
