Help With curl error 60 and the known _hosts file

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Please understand that I am a naive user who understands very little of =
how this all works.

I have four Raspberry Pies in two different locations each of which uses =
curl to upload a web cam image to a web host once every two minutes. =
This has been working well for many years.

Suddenly at about 3:08 PM today (Thailand time) all of the uploads began =
failing as follows:

Wed Mar 18 15:08:21 +07 2026 Upload Ended 7 - raspsky
curl: (7) Failed to connect to mydomain.com port 22: Connection refused

At about 3:34 that changed to:

Wed Mar 18 15:34:19 +07 2026 Upload Ended 60 - raspsky
curl: (60) SSL peer certificate or SSH remote key was not OK

Assuming that it was the SSH remote key that was the problem I tried =
logging in to the host via SSH. Sure enough, I was told that the host =
key did not match the known_hosts file. So, I permitted the =E2=80=9Cnew=E2=
=80=9D host key to be added to the known_hosts file after which I was =
able to log in via SSH which I can still do.

Sadly, curl still fails even though the new and known-correct host key =
is in the known_hosts file.

So, what do I need to do to get curl to find the new host key in the =
updated known_hosts file?

Or, do I have this completely wrong and need to do something completely =
different?

Thanks in advance,

Mike Newman
Korat, Thailand



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