Action is required to prevent your Let’s Encrypt certificate renewals from breaking. Your Let’s Encrypt client used ACME TLS-SNI-01 domain validation to issue a certificate in the past 60 days. TLS-SNI-01 validation is reaching end-of-life and will stop working on February 13th, 2019. You need to…

ACME TLS-SNI-01 on Synology NAS

LwsBtlr January 19, 2019, 5:38pm 9

If you want to force your renewal before 13 Feb:

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