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Moving to a system using acme (or DNS if your systems have the hooks) and using Letsencrypt will likely the way to go. Certbot makes this easy. Total cost for certs is your time setting it up as a one off - no ongoing costs or manual cert installs and wide acceptance. Letsencrypt/Certbot doing ACME challenges is the way to go, is viable for 1 cert upwards - ...


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