<div dir="ltr"><div><div><div>Hmm, doing <span style="font-family:monospace,monospace">openssl s_client -connect imap.gmail.com:imaps <font face="arial,helvetica,sans-serif">seems to work just fine.<br><br></font></span></div><span style="font-family:monospace,monospace"><font face="arial,helvetica,sans-serif">I did also try your suggestion of explicitly specifying port 993, and that seems to fix the problem. I'm not sure why I now need to specify it since I've never had to do so in the past.<br><br></font></span></div><span style="font-family:monospace,monospace"><font face="arial,helvetica,sans-serif">Thanks for the suggestion!<br><br></font></span></div><span style="font-family:monospace,monospace"><font face="arial,helvetica,sans-serif">-Adam<br></font></span></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, May 9, 2016 at 10:15 PM, Steven M. Bellovin <span dir="ltr"><<a href="mailto:smb@cs.columbia.edu" target="_blank">smb@cs.columbia.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><u></u>
<div>
<div><div dir="auto">If you're doing 'telnet <a href="http://imap.gmail.com" target="_blank">imap.gmail.com</a> imap' you're trying for the
</div><div dir="auto">unencrypted IMAP port. I don't think Google supports that. Asking
</div><div dir="auto">for 993 or the imaps protocol gets the encrypted version -- but you
</div><div dir="auto">can't comprehensibly talk to that port via telnet. Try
</div><div dir="auto">
</div><div dir="auto"> openssl s_client -connect imap.gmail.com:imaps
</div><div dir="auto">
</div><div dir="auto">instead.
</div><div dir="auto">
</div><div dir="auto">For your underlying problem, you may want to go to "Edit IMAP Account"
</div><div dir="auto">and explicitly specify port 993. You shouldn't have to, but...
</div><div><div class="h5"><div dir="auto">
</div><div dir="auto">On 9 May 2016, at 21:55, Adam Liter wrote:
</div><div dir="auto">
</div></div></div></div><div><div class="h5">
<blockquote><div dir="ltr"><div><div><div><div>Sorry for sending a couple of emails in a row, but it seems that this is actually the behavior that I'm seeing:<br><br><span style="font-family:monospace,monospace">$ telnet <a href="http://imap.gmail.com" target="_blank">imap.gmail.com</a> 993<br>Trying 2607:f8b0:4001:c08::6c...<br>Connected to <a href="http://gmail-imap.l.google.com" target="_blank">gmail-imap.l.google.com</a>.<br>Escape character is '^]'.<br>Connection closed by foreign host.<br><br></span></div><span style="font-family:monospace,monospace"><font face="arial,helvetica,sans-serif">So, unlike I said in the previous email, </font>telnet <a href="http://imap.gmail.com" target="_blank">imap.gmail.com</a> 993<font face="arial,helvetica,sans-serif"> does not seem to be working either.<br><br></font></span></div><span style="font-family:monospace,monospace"><font face="arial,helvetica,sans-serif">Running </font>telnet <a href="http://imap.gmail.com" target="_blank">imap.gmail.com</a> imap<font face="arial,helvetica,sans-serif"> still just seems to hang and never gets to a point where a foreign host can close the connection.<br><br></font></span></div><span style="font-family:monospace,monospace"><font face="arial,helvetica,sans-serif">Thanks.<br><br></font></span></div><span style="font-family:monospace,monospace"><font face="arial,helvetica,sans-serif">-Adam Liter<br></font></span><div><div><div><span style="font-family:monospace,monospace"><font face="arial,helvetica,sans-serif"><br></font></span></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, May 9, 2016 at 9:44 PM, Adam Liter <span dir="ltr"><<a href="mailto:adam.liter@gmail.com" target="_blank">adam.liter@gmail.com</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"><div><div><div>Actually, it seems that <font face="monospace,monospace">telnet <a href="http://imap.gmail.com" target="_blank">imap.gmail.com</a> 993 <font face="arial,helvetica,sans-serif">actually works for me to connect, whereas <font face="monospace,monospace">telnet <a href="http://imap.gmail.com" target="_blank">imap.gmail.com</a> imap<font face="arial,helvetica,sans-serif"> just hangs. So perhaps the port forwarding on my laptop has somehow been messed up for just Gmail?<br><br></font></font></font></font></div><font face="monospace,monospace"><font face="arial,helvetica,sans-serif"><font face="monospace,monospace"><font face="arial,helvetica,sans-serif">I don't know much about this, so I'd appreciate any suggestions.<br><br></font></font></font></font></div><font face="monospace,monospace"><font face="arial,helvetica,sans-serif"><font face="monospace,monospace"><font face="arial,helvetica,sans-serif">Thanks again!<span><font color="#888888"><br><br></font></span></font></font></font></font></div><span><font color="#888888"><font face="monospace,monospace"><font face="arial,helvetica,sans-serif"><font face="monospace,monospace"><font face="arial,helvetica,sans-serif">-Adam Liter<br></font></font></font></font></font></span></div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, May 9, 2016 at 9:41 PM, Adam Liter <span dir="ltr"><<a href="mailto:adam.liter@gmail.com" target="_blank">adam.liter@gmail.com</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"><div><div>Hmm, interesting. With <font face="monospace,monospace">telnet <a href="http://imap.gmail.com" target="_blank">imap.gmail.com</a> imap<font face="arial,helvetica,sans-serif"> everything just seems to hang, but when I try, for example, <font face="monospace,monospace">telnet <a href="http://mail.riseup.net" target="_blank">mail.riseup.net</a> imap<font face="arial,helvetica,sans-serif"> everything seems to work fine.<br><br></font></font></font></font></div><font face="monospace,monospace"><font face="arial,helvetica,sans-serif"><font face="monospace,monospace"><font face="arial,helvetica,sans-serif">Thanks for this initial suggestion for help with debugging. Do you have any further idea what the problem might be?<span><font color="#888888"><br><br></font></span></font></font></font></font></div><span><font color="#888888"><font face="monospace,monospace"><font face="arial,helvetica,sans-serif"><font face="monospace,monospace"><font face="arial,helvetica,sans-serif">-Adam Liter<br></font></font></font></font></font></span></div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, May 9, 2016 at 9:34 PM, Gary Hull <span dir="ltr"><<a href="mailto:YH82d7dfU@yandex.com" target="_blank">YH82d7dfU@yandex.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span>On 10 May 2016, at 4:10, Adam Liter wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Since getting home and since connecting to a few other networks, I have continued to be unable to get MailMate to access Gmail via IMAP. It continually says that it is unavailable.<br>
</blockquote>
<br></span>
You can use telnet via a terminal window or telnet app to test IMAP. For instance:<br>
<br>
<a href="https://technet.microsoft.com/en-us/library/dd789687(v=exchg.80).aspx" rel="noreferrer" target="_blank">https://technet.microsoft.com/en-us/library/dd789687(v=exchg.80).aspx</a><br>
<br>
That will at least eliminate one possibility.<br>
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</div></div></div><div dir="auto"> --Steve Bellovin, <a href="https://www.cs.columbia.edu/~smb" target="_blank">https://www.cs.columbia.edu/~smb</a>
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