Configure Postfix SMTP Relay using OAuth2

Self-hosted solutions are great to use, except when they need to send mail out. Buying a third-party mail relay works fine, but what about also self-hosting one? I walk through setting up OAuth2 authentication with Microsoft for SMTP support.

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Deploy Internal CA in AMP

Network security can always go farther. Adding an internal CA to internal resources offers direct line of trust beyond public CAs. Reduce the amount of 90-day certs pulled by issuing 1-year or longer certs internally.

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