I received a notification that one of the several domains that I have a Let’s Encrypt certficate on is using the ACME TLS-SNI-01 domain validation. Since I have multiple domains using Let’s Encrypt, all associated with the same email address, is there anyway to determine which validation method is …

Determine Domain Validation method

rg305 January 18, 2019, 6:11pm 2

Yes, grep through the files in the /etc/letsencrypt/renewal/ folder.
Look for standalone or tls

Topic		Replies	Views
Need help: Action required: Let's Encrypt certificate renewals TLS-SNI-01 domain validation Help	5	1235	February 18, 2019
How Do I Know Which Is Using ACME TLS-SNI Help	6	1176	March 14, 2019
Location of letsencrypt.org issuance policy documentation Issuance Policy	23	3123	August 5, 2018
Your Let’s Encrypt client used ACME TLS-SNI-01 domain validation to issue a certificate in the past 60 days Help	3	2350	February 17, 2019
Impending TLS-SNI-01 disable: How to determine current method? Help	3	1258	February 28, 2019