DSM Synology : Certificate did not match expected hostname with synology.me DDNS

Third party integrations
1

Hi,

After upgrading 2021.9.7 to 2021.10.2 one of my Synology integration don’t work and get this error:

Certificate did not match expected hostname: XX.XX.XX.XX. Certificate: {‘subject’: (((‘commonName’, ‘XXXXX.synology.me’),),), ‘issuer’: (((‘countryName’, ‘US’),), ((‘organizationName’, “Let’s Encrypt”),), ((‘commonName’, ‘R3’),)), ‘version’: 3, ‘serialNumber’: ‘XXXXXXXXXXX’, ‘notBefore’: ‘Aug 15 19:15:00 2021 GMT’, ‘notAfter’: ‘Nov 13 19:14:58 2021 GMT’, ‘subjectAltName’: ((‘DNS’, ‘XXXXXX.synology.me’),), ‘OCSP’: (‘http://r3.o.lencr.org’,), ‘caIssuers’: (‘http://r3.i.lencr.org/’,)}

I’m using a dynamic DNS with synology.me. My certificate is valid is when I’m connecting to DSM with my browser. I remove the integration, setup again and it was working. Unfortunately, after the upgrade to 2021.10.3, the problem comes back.

Thanks in advance for any advice.

2

That r3 certificate is expired :

1 Like
3

Thanks, @francisp for the information!
I suppose it’s on Synology to side to fix the certification on the XXXXX.synology.me subdomain?