DKIM Checker

Look up a specific selector and inspect the published key.

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Result for mailo._domainkey.github.com

k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDQPJBpMLQPx0UvC5HXIoVHgwfowk1OjOqnQNcVjbcpKTcCeOkXuTdT1U33weODlOlNTB+GIFWRpDGYZDdMvu2ffzpHTNMeRALvMhIrzNLpJbco+InXab5PzFnGdaBNVUKhv7zPlBkYKA3tNKwyRwCH8Wgja3q7Mg8rUIBklICYfQIDAQAB
Key type
rsa
Key length
1024 bits
Revoked
no
Test mode
no

Issues

  • Warning DKIM key is 1024 bits.
    Modern guidance is 2048+. Most providers can rotate to 2048-bit keys without breaking anything.