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I have the following in main.cf:<br>
<br>
smtpd_restriction_classes = spf_policy, grey_policy,
whitelist_policy verify_recipient, look_ahead<br>
<br>
Yet, the relay domain on my end is getting hammered with
undeliverables to non-existant users. They are using Exchange 2010
and I have verified their server sends out a 550 message, but would
like them not to have to deal with the messages in the first place.<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 04/15/2013 10:17 AM, Jerry Benton
wrote:<br>
</div>
<blockquote
cite="mid:CAED3VzCsGWuupzUht4du=6=Ny_GMdY3TUycDhPnkOBFxBWrATA@mail.gmail.com"
type="cite">
<div dir="ltr">NDRs are not supposed to have info in the From
field according to RFC. That prevents emails bouncing around
until the end of time.
<div><br>
</div>
<div style="">So, are these NDRs to real users? If not, you can
use recipient verification. </div>
<div style=""><br>
</div>
<div style=""><span
style="color:rgb(102,102,102);font-family:Helvetica,Arial,sans-serif;font-size:12px;font-style:italic;line-height:15.984375px;text-align:left;background-color:rgb(255,255,219)">References:</span><br
style="color:rgb(102,102,102);font-family:Helvetica,Arial,sans-serif;font-size:12px;font-style:italic;line-height:15.984375px;text-align:left">
<br
style="color:rgb(102,102,102);font-family:Helvetica,Arial,sans-serif;font-size:12px;font-style:italic;line-height:15.984375px;text-align:left">
<a moz-do-not-send="true" class=""
href="http://tools.ietf.org/html/rfc3834" target="_blank"
rel="nofollow"
style="margin:0px;padding:0px;border:0px;color:rgb(83,136,180);text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12px;font-style:italic;line-height:15.984375px;text-align:left">tools.ietf.org/html/rfc3834</a><br
style="color:rgb(102,102,102);font-family:Helvetica,Arial,sans-serif;font-size:12px;font-style:italic;line-height:15.984375px;text-align:left">
<br
style="color:rgb(102,102,102);font-family:Helvetica,Arial,sans-serif;font-size:12px;font-style:italic;line-height:15.984375px;text-align:left">
<a moz-do-not-send="true" class=""
href="http://tools.ietf.org/html/rfc2822" target="_blank"
rel="nofollow"
style="margin:0px;padding:0px;border:0px;color:rgb(83,136,180);text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12px;font-style:italic;line-height:15.984375px;text-align:left">tools.ietf.org/html/rfc2822</a><br
style="color:rgb(102,102,102);font-family:Helvetica,Arial,sans-serif;font-size:12px;font-style:italic;line-height:15.984375px;text-align:left">
<br
style="color:rgb(102,102,102);font-family:Helvetica,Arial,sans-serif;font-size:12px;font-style:italic;line-height:15.984375px;text-align:left">
<a moz-do-not-send="true" class=""
href="http://tools.ietf.org/html/rfc5321" target="_blank"
rel="nofollow"
style="margin:0px;padding:0px;border:0px;color:rgb(83,136,180);text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12px;font-style:italic;line-height:15.984375px;text-align:left">tools.ietf.org/html/rfc5321</a><br
style="color:rgb(102,102,102);font-family:Helvetica,Arial,sans-serif;font-size:12px;font-style:italic;line-height:15.984375px;text-align:left">
<br
style="color:rgb(102,102,102);font-family:Helvetica,Arial,sans-serif;font-size:12px;font-style:italic;line-height:15.984375px;text-align:left">
<a moz-do-not-send="true" class=""
href="http://tools.ietf.org/html/rfc6522" target="_blank"
rel="nofollow"
style="margin:0px;padding:0px;border:0px;color:rgb(83,136,180);text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12px;font-style:italic;line-height:15.984375px;text-align:left">tools.ietf.org/html/rfc6522</a><br>
</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Mon, Apr 15, 2013 at 3:43 PM,
Raymond Norton <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:admin@lctn.org" target="_blank">admin@lctn.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">I am using
MailScanner 4.84.5 with postfix. I have one relay domain<br>
getting hit hard by non delivery notices which are missing
any info in<br>
the "From" field.<br>
<br>
Is there a rule I can add to postfix that will bounce
messages like this?<br>
<span class="HOEnZb"><font color="#888888"><br>
<br>
Raymond<br>
--<br>
MailScanner mailing list<br>
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href="mailto:mailscanner@lists.mailscanner.info">mailscanner@lists.mailscanner.info</a><br>
<a moz-do-not-send="true"
href="http://lists.mailscanner.info/mailman/listinfo/mailscanner"
target="_blank">http://lists.mailscanner.info/mailman/listinfo/mailscanner</a><br>
<br>
Before posting, read <a moz-do-not-send="true"
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>
<br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr">
<div>
<div><br>
--<br>
</div>
Jerry Benton<br>
</div>
Mailborder Systems<br>
<a moz-do-not-send="true" href="http://www.mailborder.com"
target="_blank">www.mailborder.com</a><br>
</div>
</div>
<br>
-- <br>
This message has been scanned for viruses and
<br>
dangerous content by
<a moz-do-not-send="true" href="http://www.mailscanner.info/"><b>MailScanner</b></a>,
and is
<br>
believed to be clean.
<br>
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<br>
</blockquote>
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