Installing DomainKeys, OpenDKIM, on Postfix on CentOS 7
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LinuxTechi looks at how to get DomainKeys (OpenDKIM) set up on the Postfix MTA SMTP server on CentOS 7 Linux for securing email communications. DomainKeys is a domain level public / private key pair mechanism for digitally signing email communications to reduce the change of SPAM while assisting in protecting recipients from spoofing. Postfix is the leading open source email server (SMTP server or MTA.)