On Tue, 11 Dec 2018 19:04:17 +0000 (UTC)
Beartooth <bearto...@comcast.net> wrote:

>      According to them, my own firewall cuts us (i.e., our whole IP)
> off when we try too many times too soon to connect. (We do that, of
> course, by hitting up arrow and Enter.)
> 
>       Am I making any more sense yet?

I think I understand better what is happening.  Whether I can help I
don't know.  A summary:

You have no problem with your ISP (Comcast).  Your problem is with the
third party that handles your private domain for email.  When you try
to connect to that site via ssh, the connection attempts time out.

This sounds like an ssh configuration issue, not a firewall issue.  I'm
not very familiar with ssh since I don't use it a lot, but here goes.

Are you using key based login rather than password login?

If you are, is it possible the keys are incorrect with f29, and you
need to generate new keys?

Have you tried using the -v option to ssh, the verbose option for
debugging so you can see what is happening with the connection process?

Perhaps someone more knowledgeable about ssh will immediately point to
the problem for you.
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