The remote host has been compromised and is running a 'Backdoor' program
The remote SSL server is using a certificate which has been revoked. The particular SSL certificate has a serial number of '\x72\x03\x21\x05\xc5\x0c\x08\x57\x3d\x8e\xa5\x30\x4e\xfe\xe8\xb0' and an Issuer of USERTRUST.
There is a high probability that your server has been compromised. You should manually inspect and fix this system.