Do I need to sign all emails now I have added DKIM to DNS?

StackOverflow https://stackoverflow.com/questions/11345362

  •  19-06-2021
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Question

I have added DKIM to one of my domain DNS.

Does all outgoing email now need to be signed?

Was it helpful?

Solution

If you have added a DKIM ADSP record that says "all" or "discardable" to DNS, then you need to make sure all outgoing mail is signed.

If you have no ADSP record or your ADSP record says "unknown", then it's not necessary... but emails that are signed MIGHT fare better against spam checking software than emails that aren't signed.

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