Re: [courier-users] SMTP Auth

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Thank you all for the help. The one fact I forgot to mention (and its the
most inportant and I apologize) this server should only allow customers to
send email through it from outside the network. This is not our main mx/smtp
servers. The configuration emtpd for AUTH_REQUIRED is what I needed. I read
the documentation, but didnt catch it. Sorry all.

Thanks,
William

On Thu, Apr 17, 2008 at 10:06 AM, Jeff Jansen <techsupport_asia@sil.org>
wrote:

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> MrOzone <mrozone@gmail.com> wrote on 2008-Apr-18:
> > Ok that's good. But the problem that I'm seeing is someone externally
> > can connect to this box and spam to our local domain. But to spam
> > through this box you need to auth. Is it possible I am just missing a
> > setting to say sendine internaly or externally needs to auth?
>
> What do you mean by "spam to our local domain"? Courier won't stop
> anyone from sending spam if the recipient's address is valid. But
> courier will reject mail to non-existent users and will stop you from
> relaying if you haven't authenticated.
>
> Telnet into your box on port 25 and send a "RCPT TO" command for an
> invalid user on your domain. It should be rejected as no such user.
> Then do the same thing with a user at a different domain, and it should
> be rejected as not allowed to relay.
>
> Jeff Jansen
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<div>Thank you all for the help.&nbsp; The one fact I forgot to mention (and its the most inportant and I apologize) this server should only allow customers to send email through it&nbsp;from outside the network. This is not our main mx/smtp servers.&nbsp; The configuration emtpd for AUTH_REQUIRED is what I needed. I read the documentation, but didnt catch it.&nbsp; Sorry all.</div>

<div>&nbsp;</div>
<div>Thanks,</div>
<div>William<br><br></div>
<div class="gmail_quote">On Thu, Apr 17, 2008 at 10:06 AM, Jeff Jansen &lt;<a href="mailto:techsupport_asia@sil.org">techsupport _asia@sil.org</a>&gt; wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div class="Ih2E3d">-----BEGIN PGP SIGNED MESSAGE-----<br>Hash: SHA1<br><br></div>MrOzone &lt;<a href="mailto:mrozone@gmail.com">mrozone@gmail.com</a>&gt; wrote on 2008-Apr-18:<br>
<div class="Ih2E3d">&gt; Ok that's good. &nbsp;But the problem that I'm seeing is someone externally<br>&gt; can connect to this box and spam to our local domain. But to spam<br>&gt; through this box you need to auth. Is it possible I am just missing a<br>
&gt; setting to say sendine internaly or externally needs to auth?<br><br></div>What do you mean by &quot;spam to our local domain&quot;? &nbsp;Courier won't stop<br>anyone from sending spam if the recipient's address is valid. &nbsp;But<br>
courier will reject mail to non-existent users and will stop you from<br>relaying if you haven't authenticated.<br><br>Telnet into your box on port 25 and send a &quot;RCPT TO&quot; command for an<br>invalid user on your domain. &nbsp;It should be rejected as no such user.<br>
Then do the same thing with a user at a different domain, and it should<br>be rejected as not allowed to relay.<br>
<div class="Ih2E3d"><br>Jeff Jansen<br>-----BEGIN PGP SIGNATURE-----<br>Version: GnuPG v1.4.3 (GNU/Linux)<br>Comment: Using GnuPG with Mozilla - <a href="http://enigmail.mozdev.org/" target="_blank">http://enigmail.mozdev.org</a><br>
<br></div>iD8DBQFIB4OoGfIHDMaiC9cRAi9hAJ4zfcUgxZmM475vR2 xHEAS4kSSWLgCgqk/a<br>18qdR6W3eP6lB14WNH6ikWU=<br>=3816<br>-----END PGP SIGNATURE-----<br>
<div>
<div></div>
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