On Mon, 01 Oct 2018 11:58:37 +0100, Tony Finch via Outages said:
> Chris via Outages <[email protected]> wrote:
> >
> > me@jumpoff1 ~ $ openssl s_client -connect 104.24.114.156:443
> > CONNECTED(00000003)
> > 140186033568600:error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 
> > alert handshake failure:s23_clnt.c:802:
> > ---
> > no peer certificate available
>
> You might find it works better with SNI: use the -servername option.

I got bit by this trying to do imap-over-ssl to Gmail.

The tl;dr: If you forget the SNI, it would hand back a self-signed cert.  And 
of course,
it depended on what version of openssl you were on - I try it, get back a 
self-signed cert,
ask a cow-orker, and he had an older openssl that fetched the expected cert and 
worked...

The gory details: 
https://mta.openssl.org/pipermail/openssl-project/2018-April/000623.html

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