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Feature requests: Security

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Multiple DKIM selector support

Being able to support more than one DKIM selector, would enable clients to effect a seamless DKIM key rotation.

Only supporting one selector means that mailing must be paused whilst DNS propagates

3 votes

Tom Fletcher shared this idea · Aug 8, 2025 · Report… · Admin →

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Japs van der Zandt commented · October 28, 2025 7:02 PM · Report

This should be a no brainer. Either implement best-practice 2 (or 3) keys so rotation is easy and painless. Or hold all email until propagation is complete, as RFC 6376 section 5.2 states.

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