<div dir="ltr"><div dir="ltr"><br><div><p style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Monaco;color:rgb(195,55,32)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"> </span><span style="font-variant-ligatures:no-common-ligatures"># Mailman always changes messages enough to break DKIM, so if </span></p>
<p style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Monaco;color:rgb(195,55,32)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"> </span><span style="font-variant-ligatures:no-common-ligatures"># there are DKIM headers in a message we must remove them. </span></p>
<p style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Monaco;color:rgb(52,188,38)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"> </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(51,187,200)">if</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"> ($</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(175,173,36)">RelayHostname</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"> =~ </span><span style="font-variant-ligatures:no-common-ligatures">/(mailmanprod01\.cc\.columbia\.edu/</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)">) {</span></p>
<p style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Monaco;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"> action_delete_header(</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(52,188,38)">'DKIM-Signature'</span><span style="font-variant-ligatures:no-common-ligatures">);</span></p>
<p style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Monaco;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"> action_delete_header(</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(52,188,38)">'DomainKey-Signature'</span><span style="font-variant-ligatures:no-common-ligatures">);</span></p>
<p style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Monaco;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"> action_delete_header(</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(52,188,38)">'X-Google-DKIM-Signature'</span><span style="font-variant-ligatures:no-common-ligatures">);</span></p><p style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Monaco;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><br></span></p><p style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Monaco;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">Note... The Mailman host shown there no longer exists.</span></p><p style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Monaco;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><br></span></p><p style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Monaco;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><br></span></p><p style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Monaco;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><br></span></p><p style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Monaco;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><br></span></p><p style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Monaco;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><br></span></p></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, May 28, 2021 at 2:13 PM Dianne Skoll via MIMEDefang <<a href="mailto:mimedefang@lists.mimedefang.org">mimedefang@lists.mimedefang.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
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Original Message Attached
</span>
<span style="font-size:1px;color:rgb(255,255,255);line-height:1px;max-height:0px;max-width:0px;opacity:0;overflow:hidden;display:none">ZjQcmQRYFpfptBannerStart</span>
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This Message Is From an External Sender
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This message came from outside your organization.
</div>
</div>
</div>
<u></u>
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<br><br>
Original Message Attached
</div>
<br><br><br>---------- Forwarded message ----------<br>From: Dianne Skoll via MIMEDefang <<a href="mailto:mimedefang@lists.mimedefang.org" target="_blank">mimedefang@lists.mimedefang.org</a>><br>To: <a href="mailto:mimedefang@lists.mimedefang.org" target="_blank">mimedefang@lists.mimedefang.org</a><br>Cc: Dianne Skoll <<a href="mailto:dianne@skoll.ca" target="_blank">dianne@skoll.ca</a>><br>Bcc: <br>Date: Fri, 28 May 2021 14:12:36 -0400<br>Subject: Re: [Mimedefang] IMPORTANT MIMEDefang List Moved to <a href="http://lists.mimedefang.org" rel="noreferrer" target="_blank">lists.mimedefang.org</a><br>On Fri, 28 May 2021 14:07:54 -0400<br>
Bill Cole via MIMEDefang <<a href="mailto:mimedefang@lists.mimedefang.org" target="_blank">mimedefang@lists.mimedefang.org</a>> wrote:<br>
<br>
> It would not be simple to not break incoming DKIM signatures and<br>
> retain desired functionality of the mailing list.<br>
<br>
You could delete all DKIM-Signature: headers before feeding the<br>
incoming email to Mailman.<br>
<br>
Regards,<br>
<br>
Dianne.<br>
<br>
<br>
<br>
_______________________________________________<br>
NOTE: If there is a disclaimer or other legal boilerplate in the above<br>
message, it is NULL AND VOID. You may ignore it.<br>
<br>
MIMEDefang mailing list <a href="mailto:MIMEDefang@lists.mimedefang.org" target="_blank">MIMEDefang@lists.mimedefang.org</a><br>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>Joseph Brennan<br>Lead, Email and Systems Applications</div><div>Columbia University Information Technology<br><br></div><img src="http://cuit.columbia.edu/sites/all/themes/ias/ascuit/images/logo.png" width="200" height="35"><br></div></div></div></div></div></div></div></div>