On Mon, Oct 25, 2021, 5:24 PM Punk-BatSoup-Stasi 2.0
   <[1]punks@tfwno.gf> wrote:

     On Mon, 25 Oct 2021 16:54:56 -0400
     Karl Semich <[2]0xloem@gmail.com> wrote:
     > usually "no route to host" is from the x.x.x.x but is unrelated to
     the port.
             I never really checked, but like I said, at first sight, it
     looks like it IS related to the port. I'm not going to bother
     looking at the manual, but you can if you want. It's error 113...
             At any rate, from here the 'host' is fine and there's
     nothing on port 25, or it's rejecting connections on port 25 and
     giving a misleading error on purpose. Second option is less likely.
     >
     > it's possible it could appear related to the port due to random
     timing
     >
     > or something could be intentionally triggering the
     not-usually-port-related
     > error only attempts to connect to the port were made
             yes. So you can try connecting. Since you're in the US you
     won't be discriminated based on country.

   $ telnet [3]stimson.state.gov 25
   Trying 169.252.4.133...
   Connected to [4]stimson.state.gov.
   Escape character is '^]'.
   [5]554-stimson.state.gov
   554 Your access to this mail system has been rejected due to the
   sending MTA's poor reputation. If you believe that this failure is in
   error, please contact the intended recipient via alternate means.
   Connection closed by foreign host.
   Usually when a port isn't responding you'll get "timed out", "closed",
   "rejected" .  port 79 times out for me.
   dunno.

     >
     > maybe routing has changed in the past ten years?
             nah, it still is all the old arpanet stuff.
     >
     >
     > >
     > >
     > > >
     > > > I'm having experiences like that, too.
     > > >
     > > > >
     > >

References

   1. mailto:punks@tfwno.gf
   2. mailto:0xloem@gmail.com
   3. http://stimson.state.gov/
   4. http://stimson.state.gov/
   5. http://554-stimson.state.gov/