Obtaining certificate chain for smtpoutbound.citigroup.com, one moment while we download the smtpoutbound.citigroup.com certificate and related intermediate certificates...
Refreshing certificate chain and revocation status for smtpoutbound.citigroup.com, one moment while we re-check the smtpoutbound.citigroup.com certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for smtpoutbound.citigroup.com failed
Sorry, the request for smtpoutbound.citigroup.com could not be completed...
We could not load the certificate for smtpoutbound.citigroup.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.