Obtaining certificate chain for mdx.usps.com, one moment while we download the mdx.usps.com certificate and related intermediate certificates...
Refreshing certificate chain and revocation status for mdx.usps.com, one moment while we re-check the mdx.usps.com certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for mdx.usps.com failed
Sorry, the request for mdx.usps.com could not be completed...
We could not load the certificate for mdx.usps.com, it might not exist or we could not reach the server, complete the TLS handshake, etc.
Revoked certificates can't and should not be trusted, these certificate will cause errors like "NET::ERR_CERT_REVOKED" in browsers and expose a security risk.