You could block port 25 in your iptables

On 02/03/2011 11:20 AM, Jeremy Utley wrote:
> Hello everyone!
>
> We're using a toaster installation for our primary mail server at my
> company, and over the last few weeks we've been working on configuring
> everyone's mail clients to use SSL for sending & receiving e-mail.
> Now that we have everyone converted over to use of SSL, we'd like to
> stop all non-SSL access.  For imap and pop3, it was quite simple, I
> simply disabled the imap4 and pop3 run scripts in
> /var/qmail/supervise.  However, for SMTP, I haven't had much luck yet.
>  We'd like to force the submission port 587 to require TLS and
> SMTP-Auth before a message is sent out., while leaving SMTP port 25
> un-modified.  I had read on another qmail site that you could do this
> by use of a FORCE_TLS=1 variable in the run script, but that did not
> work, so I suspect that this patch is not in the toaster packages (and
> running strings against /var/qmail/bin/qmail-smtpd seems to bear that
> out).  Is there any way with the toaster to enforce TLS usage, and
> reject any mail that's not TLS.  We'd like to stick with TLS so we
> don't have to reconfigure everyone's mail clients for SMTPS, which is
> deprecated at any rate.
>
> Thanks for any help you all can give!
>
> Jeremy
>
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---------------------------------------------------------------------------------
Qmailtoaster is sponsored by Vickers Consulting Group 
(www.vickersconsulting.com)
    Vickers Consulting Group offers Qmailtoaster support and installations.
      If you need professional help with your setup, contact them today!
---------------------------------------------------------------------------------
     Please visit qmailtoaster.com for the latest news, updates, and packages.
     
      To unsubscribe, e-mail: [email protected]
     For additional commands, e-mail: [email protected]


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