Have you checked your cert? The actual cert is different from the cert you are providing.
Certificate:
Data:
Version: 3 (0x2)
Serial Number:
2f:a4:1c:d7:b3:65:58:be:59:5c:38:c8
Signature Algorithm: sha256WithRSAEncryption
Issuer: C=BE, O=GlobalSign nv-sa, CN=GlobalSign Domain Validation CA - SHA256 - G2
Validity
Not Before: Oct 17 07:13:06 2017 GMT
Not After : Dec 11 08:45:40 2020 GMT
Subject: OU=Domain Control Validated, CN=cc.sedoparking.com
...
X509v3 Subject Alternative Name:
DNS:cc.sedoparking.com
Error tell everething you need
service.external.mydomain.com.br uses an invalid security certificate.
The certificate is only valid for cc.sedoparking.com.
Error code: SSL_ERROR_BAD_CERT_DOMAIN
Update you cert to a valid one.