<div dir="ltr">Actually... Postfix has had recipient verification capabilities inbuilt for some time, so there really is no need for milter-ahead to enter the equation. What many do is to implement some other method of verifying the viability of recipients, to be able to weed out the kind of e-mail addresses that make no sense outside the "forest" or "organizaional unit" serviced by the AD/Exchange server(s).<div>
In my case I do this with a pretty straightforward shell script around a pretty basic ldapsearch (from openldap), that weed out all things I don't want to expose, and that generate and postmap a relay recipient map. ISTR there being something about this in the wiki already, as well as how to setup PF for general recipient verification:-)</div>
<div><br></div><div>Cheers</div><div>-- </div><div>-- Glenn</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On 30 July 2014 16:08, Alex Neuman <span dir="ltr"><<a href="mailto:alex@vidadigital.com.pa" target="_blank">alex@vidadigital.com.pa</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">I've gone the milter-ahead route myself a couple of times; don't know if/how it applies to Postfix. I did find this through Google:<div>
<br></div><div><a href="http://acidx.net/wordpress/2014/06/installing-a-mailserver-with-postfix-dovecot-sasl-ldap-roundcube/" target="_blank">http://acidx.net/wordpress/2014/06/installing-a-mailserver-with-postfix-dovecot-sasl-ldap-roundcube/</a><br>
</div><div><br></div><div>In section 6 it describes how Postfix can check LDAP for valid recipients, if I interpret it correctly.</div><div><br></div><div>Just a brain shart.</div><div><br></div><img src="http://t.sigopn05.com/img.gif?ukey=agxzfnNpZ25hbHNjcnhyGAsSC1VzZXJQcm9maWxlGICAgKCUyroKDA&key=ae73fb69-185a-4805-8c58-9a6ebd641ab1" width="1" height="1"></div>
<div class="gmail_extra"><div class=""><br clear="all"><div><div dir="ltr"><div style="font-family:arial;font-size:small"><div><br><b>Alex Neuman van der Hans<br></b>Reliant Technologies / Vida Digital<br><a href="http://vidadigital.com.pa/" style="color:rgb(17,85,204)" target="_blank">http://vidadigital.com.pa/</a><br>
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<br><br></div><div><div class="h5"><div class="gmail_quote">On Wed, Jul 30, 2014 at 7:46 AM, Tracy Greggs <span dir="ltr"><<a href="mailto:mailscanner-list@okla.com" target="_blank">mailscanner-list@okla.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Milter-Ahead is just a commercial mail filter addon. It is a 1 time cost of<br>
a little over 100.00 US. It checks with the exchange box to see if it is a<br>
valid recipient before MailScanner processes it. It caches results as well.<br>
<br>
If we wanted to have a discussion about free and not free, exchange is<br>
certainly not free.<br>
<br>
I was merely trying to point out that in a MailScanner gateway setup for<br>
exchange, Milter-Ahead works great for making sure the recipient is valid on<br>
the exchange server before any processing.<br>
<br>
It really has nothing to do with spam filtering, it just keeps you from<br>
processing mail with the MailScanner gateway and shipping it to the exchange<br>
box after when it is not a valid recipient on the exchange box in the 1st<br>
place.<br>
<br>
Perhaps you misunderstood the point I was making.<br>
<br>
How does graylisting do that or have anything to do with that?<br>
<br>
Regards<br>
<br>
<br>
-----Original Message-----<br>
From: <a href="mailto:mailscanner-bounces@lists.mailscanner.info" target="_blank">mailscanner-bounces@lists.mailscanner.info</a><br>
[mailto:<a href="mailto:mailscanner-bounces@lists.mailscanner.info" target="_blank">mailscanner-bounces@lists.mailscanner.info</a>] On Behalf Of Mogens<br>
Melander<br>
Sent: Wednesday, July 30, 2014 2:36 AM<br>
To: MailScanner discussion<br>
Subject: RE: New to MailScanner<br>
<br>
It's probably just me, but.<br>
<br>
Why would the OP need a paid service to do, what his free, and very potent<br>
gateway, will do for him, in less cycles. Saving him the hassle of dealing<br>
with a commercial entity, instead of a friendly and helpful user community.<br>
<br>
A few keywords in google's search box would bring him more helpful<br>
suggestions than yours.<br>
<br>
BTW. I use sendmail too. I use smf graylisting:<br>
<br>
<a href="http://www.greylisting.org/implementations/sendmail.shtml" target="_blank">http://www.greylisting.org/implementations/sendmail.shtml</a><br>
<br>
<a href="https://www.google.dk/?gws_rd=ssl#newwindow=1&q=smf+greylisting+postfix" target="_blank">https://www.google.dk/?gws_rd=ssl#newwindow=1&q=smf+greylisting+postfix</a><br>
<br>
If it's not postfix friendly, something similar should be easy to find.<br>
<br>
Just a brain fart.<br>
<br>
On Tue, July 29, 2014 20:47, Tracy Greggs wrote:<br>
> I use sendmail, so someone else can comment on your postfix question.<br>
><br>
><br>
><br>
> I would make a suggestion to turn on the Exchange antispam feature for<br>
> recipient checking and run MILTER-AHEAD with your MailScanner MTA. It<br>
> is cheap but not free, but well worth the expense.<br>
><br>
><br>
><br>
> Regards,<br>
><br>
> Tracy Greggs<br>
><br>
><br>
><br>
><br>
><br>
> From: <a href="mailto:mailscanner-bounces@lists.mailscanner.info" target="_blank">mailscanner-bounces@lists.mailscanner.info</a><br>
> [mailto:<a href="mailto:mailscanner-bounces@lists.mailscanner.info" target="_blank">mailscanner-bounces@lists.mailscanner.info</a>] On Behalf Of Greg<br>
> Ledford<br>
> Sent: Tuesday, July 29, 2014 10:49 AM<br>
> To: '<a href="mailto:mailscanner@lists.mailscanner.info" target="_blank">mailscanner@lists.mailscanner.info</a>'<br>
> Subject: New to MailScanner<br>
><br>
><br>
><br>
> Hello. Please be kind as I'm still learning the program and I'll have<br>
> lots of questions. Is there a webpage that lists the instructions to<br>
> install MailScanner + Postfix if you are using it as a front-end for<br>
> an Exchange<br>
> 2010 server? Thanks for any help you can provide.<br>
><br>
><br>
><br>
><br>
> Greg Ledford<br>
> PHHW Technology Services LLC<br>
> 1000 Corporate Centre Dr, Ste 200<br>
> Franklin, TN 37067<br>
> Office <a href="tel:%28615%29%20778-1777" value="+16157781777" target="_blank">(615) 778-1777</a><br>
> Cell <a href="tel:%28615%29%20403-6989" value="+16154036989" target="_blank">(615) 403-6989</a><br>
><br>
> Fax <a href="tel:%28615%29%20771-0081" value="+16157710081" target="_blank">(615) 771-0081</a><br>
> Email <mailto:<a href="mailto:gledford@phhwtechnology.com" target="_blank">gledford@phhwtechnology.com</a>><br>
> <a href="mailto:gledford@phhwtechnology.com" target="_blank">gledford@phhwtechnology.com</a><br>
><br>
><br>
><br>
><br>
> --<br>
> This message has been scanned for viruses and dangerous content by<br>
> <<a href="http://www.mailscanner.info/" target="_blank">http://www.mailscanner.info/</a>> MailScanner, and is believed to be<br>
> clean.<br>
><br>
><br>
> --<br>
> This message has been scanned for viruses and dangerous content by<br>
> MailScanner, and is believed to be clean.<br>
><br>
><br>
> --<br>
> This message has been scanned for viruses and dangerous content by<br>
> MailScanner, and is believed to be clean.<br>
><br>
> --<br>
> MailScanner mailing list<br>
> <a href="mailto:mailscanner@lists.mailscanner.info" target="_blank">mailscanner@lists.mailscanner.info</a><br>
> <a href="http://lists.mailscanner.info/mailman/listinfo/mailscanner" target="_blank">http://lists.mailscanner.info/mailman/listinfo/mailscanner</a><br>
><br>
> Before posting, read <a href="http://wiki.mailscanner.info/posting" target="_blank">http://wiki.mailscanner.info/posting</a><br>
><br>
> Support MailScanner development - buy the book off the website!<br>
><br>
<br>
<br>
--<br>
Mogens Melander<br>
<a href="tel:%2B66%208701%2033224" value="+66870133224" target="_blank">+66 8701 33224</a><br>
<br>
<br>
--<br>
This message has been scanned for viruses and<br>
dangerous content by MailScanner, and is<br>
believed to be clean.<br>
<br>
--<br>
MailScanner mailing list<br>
<a href="mailto:mailscanner@lists.mailscanner.info" target="_blank">mailscanner@lists.mailscanner.info</a><br>
<a href="http://lists.mailscanner.info/mailman/listinfo/mailscanner" target="_blank">http://lists.mailscanner.info/mailman/listinfo/mailscanner</a><br>
<br>
Before posting, read <a href="http://wiki.mailscanner.info/posting" target="_blank">http://wiki.mailscanner.info/posting</a><br>
<br>
Support MailScanner development - buy the book off the website!<br>
<br>
--<br>
This message has been scanned for viruses and<br>
dangerous content by MailScanner, and is<br>
believed to be clean.<br>
<span><font color="#888888"><br>
<br>
--<br>
This message has been scanned for viruses and<br>
dangerous content by MailScanner, and is<br>
believed to be clean.<br>
<br>
--<br>
MailScanner mailing list<br>
<a href="mailto:mailscanner@lists.mailscanner.info" target="_blank">mailscanner@lists.mailscanner.info</a><br>
<a href="http://lists.mailscanner.info/mailman/listinfo/mailscanner" target="_blank">http://lists.mailscanner.info/mailman/listinfo/mailscanner</a><br>
<br>
Before posting, read <a href="http://wiki.mailscanner.info/posting" target="_blank">http://wiki.mailscanner.info/posting</a><br>
<br>
Support MailScanner development - buy the book off the website!<br>
</font></span></blockquote></div><br></div></div></div>
<br>--<br>
MailScanner mailing list<br>
<a href="mailto:mailscanner@lists.mailscanner.info">mailscanner@lists.mailscanner.info</a><br>
<a href="http://lists.mailscanner.info/mailman/listinfo/mailscanner" target="_blank">http://lists.mailscanner.info/mailman/listinfo/mailscanner</a><br>
<br>
Before posting, read <a href="http://wiki.mailscanner.info/posting" target="_blank">http://wiki.mailscanner.info/posting</a><br>
<br>
Support MailScanner development - buy the book off the website!<br>
<br></blockquote></div><br><br clear="all"><div><br></div>-- <br>-- Glenn<br>email: glenn < dot > steen < at > gmail < dot > com<br>work: glenn < dot > steen < at > ap1 < dot > se
</div>