Hello Vercel Team,
I need help with a custom domain SSL/TLS issue.
Project: nusimo
Custom domains:
Both domains remain "Invalid Configuration" in my Vercel project.
I have verified the DNS configuration:
A record: nusimo.net → 216.198.79.1
CNAME: www.nusimo.net → 72d13bdbb3d33cfe.vercel-dns-017.com
DNS checks confirm that the records are publicly resolving correctly.
Additional checks:
- No AAAA record exists for nusimo.net.
- No CAA record exists for nusimo.net.
- No _acme-challenge TXT record exists.
- DNS is managed by Rumahweb.
HTTP is successfully reaching Vercel:
http://www.nusimo.net → 308 Permanent Redirect to HTTPS http://www.www.nusimo.net → 200 OK from Vercel
However, HTTPS fails during the TLS handshake.
For example:
curl -vkI https://www.nusimo.net
The connection reaches the Vercel IP, but the TLS handshake fails with:
"schannel: failed to receive handshake, SSL/TLS connection failed"
I have already verified the DNS records, waited for propagation, and removed/re-added the custom domains in Vercel. The problem still persists.
Could you please check whether SSL certificate provisioning or the domain validation state is stuck on the Vercel side?
If necessary, please re-trigger SSL certificate provisioning for:
Thank you.
