<div dir="ltr"><div class="gmail_extra">Hi, Brian -</div><div class="gmail_extra"><br></div><div class="gmail_extra">Firstly note that I've not touched Sendmail since 2008 (we use Exim now) so my memory/interpretation might be hazy in places in my comments below…</div><div class="gmail_extra"><br></div><div class="gmail_extra"><div class="gmail_quote">On 13 January 2017 at 13:31, Brian Novogradac <span dir="ltr"><<a href="mailto:Brian.Novogradac@utoronto.ca" target="_blank">Brian.Novogradac@utoronto.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)">Thanks for helping me out here here is some more information.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="gmail-m_-4670916704799623933MsoListParagraph"><u></u><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)"><span>-<span style="font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"times new roman"">
</span></span></span><u></u><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)">Running Centos 6.8<u></u><u></u></span></p>
<p class="gmail-m_-4670916704799623933MsoListParagraph"><u></u><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)"><span>-<span style="font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"times new roman"">
</span></span></span><u></u><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)">Yes the zendto is sending messages to sendmail on the machine<u></u><u></u></span></p>
<p class="gmail-m_-4670916704799623933MsoListParagraph"><u></u><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)"><span>-<span style="font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"times new roman"">
</span></span></span><u></u><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)">I have all hostname information set correctly in hosts file<u></u><u></u></span></p>
<p class="gmail-m_-4670916704799623933MsoListParagraph"><u></u><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)"><span>-<span style="font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"times new roman"">
</span></span></span><u></u><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)">In <a href="http://sendmail.mc" target="_blank">sendmail.mc</a> I have added the domainname in define(`confDOMAIN_NAME', `<a href="http://zendto.host.ca" target="_blank">zendto.host.ca</a>')dnl</span></p></blockquote><div>I seem to remember that you set confDOMAIN_NAME to the domain name you want adding to unqualified addresses — ie, those that are only a username. If you have <u>really</u> set this to "<a href="http://zendto.host.ca">zendto.host.ca</a>" then a message from/to the plain username address</div><div><br></div></div></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div>apache</div></div></div></blockquote><div><br></div>say, becomes<div><br></div><div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div><a href="mailto:apache@zendto.host.ca">apache@zendto.host.ca</a></div></blockquote><div><br></div>I've used dig to look up data for the domain "<a href="http://host.ca">host.ca</a>" and to be honest I'm not convinced you've really set it to that as it seems to be something to do with <a href="http://domainsatcost.ca">domainsatcost.ca</a>.<br><div class="gmail_extra"><div class="gmail_quote"><div><br></div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><p class="gmail-m_-4670916704799623933MsoListParagraph"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:calibri,sans-serif;font-size:11pt">Maillog:</span><br></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)">Jan 13 08:19:19 zendto sendmail[5941]: v0DDJILc005941: from=apache, size=1517, class=0, nrcpts=1, msgid=<201701131319.<wbr>v0DDJILc005941@zendto.XXXXX>, relay=apache@localhost</span></p></blockquote><div><br></div><div>The above will be the locally generated message your apache username is creating and handing to Sendmail.</div><div><br></div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)">Jan 13 08:19:19 zendto sendmail[5942]: v0DDJJOE005942: from=<apache@ zendto.XXXXX >, size=1744, class=0, nrcpts=1, msgid=<201701131319.<wbr>v0DDJILc005941@ zendto.XXXXX
>, proto=ESMTP, daemon=MTA, relay=localhost.localdomain [127.0.0.1]</span></p></blockquote><div><br></div><div>Then sendmail qualifies the plain sender address "apache" with a domain name, making it <apache.zendto.XXXXX> — hmm, if that's the case then that won't be a valid email address.</div><div><br></div><div>I seem to recall that "relay=" identifies the server the message is transmitted onward to: in this case to the SMTP server running on the same machine — localhost.localdomain [127.0.0.1]</div><div><br></div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)">Jan 13 08:19:19 zendto sendmail[5941]: v0DDJILc005941: to=<a href="mailto:userXXX@gmail.com" target="_blank">userXXX@gmail.com</a>, ctladdr=apache (48/48), delay=00:00:01, xdelay=00:00:00, mailer=relay, pri=31517,
relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (v0DDJJOE005942 Message accepted for delivery)</span></p></blockquote><div><br></div><div>I think the above is Sendmail logging it has successfully transmitted your message to the SMTP listener running on your host.</div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)">Jan 13 08:19:20 zendto sendmail[5944]: STARTTLS=client, relay=<a href="http://gmail-smtp-in.l.google.com" target="_blank">gmail-smtp-in.l.google.<wbr>com</a>., version=TLSv1/SSLv3, verify=FAIL, cipher=ECDHE-RSA-AES128-GCM-<wbr>SHA256,
bits=128/128</span></p></blockquote><div><br></div><div>Your Sendmail then decides it needs to transmit the message to the server <a href="http://gmail-smtp-in.l.google.com">gmail-smtp-in.l.google.com</a></div><div><br></div><div>Which tallies with the MX records for <a href="http://gmail.com">gmail.com</a> — these have the most preferred one being <a href="http://gmail-smtp-in.l.google.com">gmail-smtp-in.l.google.com</a></div><div><br></div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)">Jan 13 08:19:20 zendto sendmail[5944]: v0DDJJOE005942: to=< <a href="mailto:userXXX@gmail.com" target="_blank">userXXX@gmail.com</a> >, ctladdr=<apache@ zendto.XXXXX > (48/48), delay=00:00:01, xdelay=00:00:01, mailer=esmtp,
pri=121744, relay=<a href="http://gmail-smtp-in.l.google.com" target="_blank">gmail-smtp-in.l.google.<wbr>com</a>. [IPv6:2607:f8b0:4001:c01::1b], dsn=5.0.0, stat=Service unavailable</span></p></blockquote><div><br></div><div>The above line is Gmail's SMTP server refusing to accept your message, returning a 5xx permanent failure response code, with the rather unhelpful explanatory text "Service unavailable".</div><div><br></div><div>The 5xx response code tells your Sendmail to abandon any further attempts to send the message and to generate a Non-Delivery Report to return to the sender.</div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)">Jan 13 08:19:20 zendto sendmail[5944]: v0DDJJOE005942: v0DDJKOE005944: DSN: Service unavailable<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)">Jan 13 08:19:20 zendto sendmail[5944]: v0DDJKOE005944: to=root, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=32992, dsn=2.0.0, stat=Sent</span></p></blockquote><div><br></div><div>This shows a message being delivered to the local mailbox belonging to the root username on your server — ie, the Zendto box. Check in that mailbox and you'll likely find the Non-Delivery Report, hopefully with some information about why the message was rejected by Gmail.</div><div><br></div><div>Things that trouble me are the stray spaces everywhere. For example the sender address seems to be <apache@ zendto.XXXXX > and the recipient address < <a href="mailto:userXXX@gmail.com">userXXX@gmail.com</a> >. But a quick test suggests Gmail would reject these with a "555 5.5.2 Syntax error." response rather than "Service unavailable".</div><div><br></div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:calibri,sans-serif;font-size:11pt">Email Header:</span><br></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal">Received: from zendto.XXXXX (localhost.localdomain [127.0.0.1]) by<br>
zendto.XXXXX t(8.14.4/8.14.4) with ESMTP id v0CJ8WAd001980; Thu, 12 Jan<br>
2017 14:08:32 -0500<br>
Received: (from <a href="mailto:apache@localhost" target="_blank">apache@localhost</a>) by <span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)">
zendto.XXXXX </span>(8.14.4/8.14.4/Submit)<br>
id v0CJ8Wm9001976; Thu, 12 Jan 2017 14:08:32 -0500<br>
Date: Thu, 12 Jan 2017 14:08:32 -0500<br>
Message-ID: <<a href="mailto:201701121908.v0CJ8Wm9001976@send.utoronto.ca" target="_blank">201701121908.v0CJ8Wm9001976@<span style="color:windowtext;text-decoration:none">
</span>zendto.XXXXX </a>><br>
To: < <span style="color:rgb(31,73,125)"><a href="mailto:userXXX@gmail.com" target="_blank">userXXX@gmail.com</a> </span>><br>
Subject: User has dropped off a file for you<br>
X-PHP-Originating-Script: 0:NSSDropbox.php<br>
From: Zendto <<a href="mailto:no-reply@utoronto.ca" target="_blank">no-reply@<span style="color:windowtext;text-decoration:none">
</span>zendto.XXXXX </a>></p></blockquote></div><br>Basically there's still a lot of obfuscation, possibly along with some typos (the stray spaces) introduced whilst obfuscating, for anyone else to be sure what's going on. You'll need to discuss your pristine logs with a local Sendmail support guru at your site.<br><br>Cheers,</div><div class="gmail_extra">Mike B.<br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><font color="#666666">Systems Administrator & Change Manager</font></div><div><font color="#666666">IT Services, University of York, Heslington, York YO10 5DD, UK</font></div><div><font color="#666666">Tel: +44-(0)1904-323811</font></div><div><font color="#666666"><br></font></div><div><font color="#666666">Web:<span style="white-space:pre"> </span><a href="http://www.york.ac.uk/it-services" target="_blank">www.york.ac.uk/it-services</a></font></div><div><font color="#666666">Disclaimer:<span style="white-space:pre"> </span><a href="http://www.york.ac.uk/docs/disclaimer/email.htm" target="_blank">www.york.ac.uk/docs/disclaimer/email.htm</a></font></div></div></div>
</div></div></div>