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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> mailscanner-bounces@lists.mailscanner.info
[mailto:mailscanner-bounces@lists.mailscanner.info] <b>On Behalf Of </b>Rick
Cooper<br>
<b>Sent:</b> 22 June 2009 20:35<br>
<b>To:</b> 'MailScanner discussion'<br>
<b>Subject:</b> RE: DKIM signing<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>I am not sure how sendmail does things but I use two instances of
exim as well,</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal> <span style='font-size:10.0pt;font-family:
"Arial","sans-serif";color:blue'>eximIN (check
DKIM)----------------->INqueue--> MailScanner(Do MS
Stuff)---->OUTQueue-----> EximOut(Sign DKIM and other out stuff)</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>The only difference between the exim instance is the config(s) the
use. I have no recpt,data,ehlo acls in the outbound and I have no
domainkey/DKIM signing in the inbound</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>Rick</span><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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<hr size=2 width="100%" align=center>
</span></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><span lang=EN-US
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
mailscanner-bounces@lists.mailscanner.info
[mailto:mailscanner-bounces@lists.mailscanner.info] <b>On Behalf Of </b>Alex
Neuman<br>
<b>Sent:</b> Monday, June 22, 2009 2:58 PM<br>
<b>To:</b> MailScanner discussion<br>
<b>Subject:</b> Re: DKIM signing</span><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>The point I was trying to make
is that MailScanner works like this (oversimplifying, I know, but bear with
me):<br>
<br>
1. First instance of sendmail grabs e-mail after milters and such, and deposits
in an incoming queue<br>
2. MailScanner grabs, scans, deals with messages in the queue and places them
in the outgoing (final) queue<br>
3. Second instance of sendmail grabs e-mail from outgoing (final) queue and
delivers them to their final destination.<br>
<br>
In order to DKIM-sign things it would have to be done using the second
instance. Since MailScanner basically runs the same instance of sendmail using a
command line parameter to distinguish the two, there would have to be a slight
change to the way step 3 is done if you wanted to do it on one machine.
Otherwise step 4 would be to have the outgoing MTA (separate machine) do the
DKIM signing.<br>
<br>
Please correct me if I'm looking at this the wrong way.<o:p></o:p></p>
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<p class=MsoNormal>On Mon, Jun 22, 2009 at 1:42 PM, Rick Cooper <<a
href="mailto:rcooper@dwford.com">rcooper@dwford.com</a>> wrote:<o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>I don't use sendmail (exim no milters required) but I am sure there
is a way to handle it easily in sendmail. Be advised however that when I first
implemented domainkeys the test server at <a href="http://sendmail.net"
target="_blank">sendmail.net</a> was the only domainkeys test server (of
4) to state that my keys were invalid. It does pass my DKIM keys but still
doesn't pass the domainkeys.</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>Rick</span><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<div class=MsoNormal align=center style='text-align:center'><span lang=EN-US>
<hr size=2 width="100%" align=center>
</span></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><span lang=EN-US
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <a
href="mailto:mailscanner-bounces@lists.mailscanner.info" target="_blank">mailscanner-bounces@lists.mailscanner.info</a>
[mailto:<a href="mailto:mailscanner-bounces@lists.mailscanner.info"
target="_blank">mailscanner-bounces@lists.mailscanner.info</a>] <b>On Behalf Of
</b>Alex Neuman<br>
<b>Sent:</b> Monday, June 22, 2009 12:02 PM<br>
<b>To:</b> MailScanner discussion<br>
<b>Subject:</b> Re: DKIM signing</span><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>Any chance of someone thinking
up a way to fire up a third instance of sendmail on one machine to do something
like this?<o:p></o:p></p>
<div>
<p class=MsoNormal>On Mon, Jun 22, 2009 at 10:38 AM, Rick Cooper <<a
href="mailto:rcooper@dwford.com" target="_blank">rcooper@dwford.com</a>>
wrote:<o:p></o:p></p>
<p class=MsoNormal>You don't want to sign dkim or domainkeys until the last
thing before the<br>
message is "place on the wire". Any modification made after the
signing<br>
with, of course make the signature invalid. This means the outbound MTA has<br>
to be the signing agent.<br>
<br>
Rick<br>
<br>
Does anyone have some information on how to do this with postfix? I’ve 1
instance of postfix running that uses Julian’s hold queue method.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Jason<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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