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360 Monitoring reports website is down and shows error: “SSL peer certificate or SSH remote key was not OK”

360 Monitoring marks a website down with one of the following errors:

[60] SSL peer certificate or SSH remote key was not OK

[35] SSL connect error (error:14094410:SSL routines:ssl3_read_bytes:sslv3 alert handshake failure)
At the same time, the website can be opened in a browser without any issues

The website has AAAA records in the DNS zone but the website does not have the SSL certificate on IPv6

Note: 360 Monitoring uses IPv6 as priority if exists.

Make sure that the website can be opened via IPv6 or remove the AAAA record from the DNS zone.

Make 360 Monitoring checks the website over IPv4 only:

Go to 360 Monitoring > Websites > site_name > Settings > Show Advanced Options
Set the option IP Version to ipv4
Click Save

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