*SniCertificate::CertificateNonvalidError: Unable to verify challenge for

*SniCertificate::CertificateNonvalidError: Unable to verify challenge for .issuer.ibs.edu.sg: DNS problem: NXDOMAIN looking up TXT for _acme-challenge.issuer.ibs.edu.sg - check that a DNS record exists for this domain

We can’t renew your Let’s Encrypt certificate automatically until the issue is resolved. Check our troubleshooting guide for more information on how to fix the problem, and then renew the certificate.

Certificate
Let’s Encrypt

Domains
issuer.ibs.edu.sg

Created
Aug 6, 2020 at 4:21 PM

Updated
Jan 24 at 7:50 PM

Expired
Apr 24 (16 days ago)

Hi @IBS ,

It looks like this issue was due to propagation. DNS changes can take up to 48 hours before they take effect (or propagate).

I can see that the site is now up-and-running!