Patent ID: 11916858
Assignee: SOPHOS LIMITED
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A computer program product for mitigating outbound electronic message spam, the computer program product comprising:
one or more non-transitory computer readable storage media having computer readable program code collectively stored on the one or more computer readable storage media, the computer readable program code being executed by one or more processors of a computer system to cause the computer system to perform a plurality of operations comprising:
determining, by the one or more processors of the computer system, whether an outbound electronic message to a recipient sent from an electronic messaging account of a sender has at least a predetermined number of indicators of compromise, wherein determining whether the outbound electronic message includes at least the predetermined number of indicators of compromise includes:
determining, by the one or more processors, whether a database containing senders known to have sent one or more spam precursor electronic messages includes the sender of the outbound electronic message; and/or
determining, by the one or more processors, whether a database containing recipients of the one or more spam precursor electronic messages includes the recipient of the outbound electronic message;

sending, by the one or more processors, the outbound electronic message to the recipient using an Internet Protocol (IP) address from a first pool of service delivery IP addresses in response to a determination that the outbound electronic message has less than the predetermined number of indicators of compromise; and
sending, by the one or more processors, the outbound electronic message to the recipient using an IP address from a second pool of service delivery IP addresses in response to a determination that the outbound electronic message has at least the predetermined number of indicators of compromise.