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 <aneeshjoseph@???> 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 |
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