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I am about to register a DKIM for a new domain. However, that format differs form what I expect. cPanel is giving me this:

default._domainkey IN TXT "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvbBZcUcajRf+nP+BSvhsa8roEcor2rf9oLs98u8HrqjZgpHQJ4frbA2C8OuRlPGN9JzZKpTmeeJg2eITeJXlQsc88xX0hqZCogDUeUcTLghDhw2Vd7q5AWG6mDcc3F2HJ0q5GwkYTS7d6D9nXCGcSE/M/F2pgwBe5MI5S9h60cr+XhHrK3uDCW3QNMj6jRDIW" 3o5WquA5/MmQJJ38BwMzn/7HJwcL6aJ5EnA3KlLi413kK820f4h2E+u4dAT5Kmua7x8Lx1ny7oEZH/MBQoEMq0s7XuDD+d0gR/0VCHvQ6PhZf4wOwzGIO6jn/Fb/pywAgQqZRglRGZLbcoHHQCIgQIDAQAB\;

Please pay attention to the placement of the double quotes - it is ended inside the p-string, and then theres another string after that. I'm having problems getting my DKIM to verify.

Shall I do something different than just pasting the "v= xxxx as text record?

THanks!

user2806026
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1 Answers1

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This seems normal.

  • Each TXT value is of limited length – 0 to 255 bytes, not enough for a large RSA key. I'm not sure how DKIM deals with that...

  • However, TXT records are multi-valued. foo TXT "bar" "baz" "quux" is valid. I think usually multiple values are joined into one when interpreting the record.

  • In zonefiles, quotes are optional if the text doesn't have spaces or special characters, or if they're properly escaped (i.e. foo\; instead of just foo; works just as well as "foo;" does).

So what you need is a TXT record with the following two values:

v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvbBZcUcajRf+nP+BSvhsa8roEcor2rf9oLs98u8HrqjZgpHQJ4frbA2C8OuRlPGN9JzZKpTmeeJg2eITeJXlQsc88xX0hqZCogDUeUcTLghDhw2Vd7q5AWG6mDcc3F2HJ0q5GwkYTS7d6D9nXCGcSE/M/F2pgwBe5MI5S9h60cr+XhHrK3uDCW3QNMj6jRDIW

3o5WquA5/MmQJJ38BwMzn/7HJwcL6aJ5EnA3KlLi413kK820f4h2E+u4dAT5Kmua7x8Lx1ny7oEZH/MBQoEMq0s7XuDD+d0gR/0VCHvQ6PhZf4wOwzGIO6jn/Fb/pywAgQqZRglRGZLbcoHHQCIgQIDAQAB;

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u1686_grawity
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  • Thanks for your comment. However, I am not sure that I fully understand. Will I just create this TXT entry: name: default._domainkey value: "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvbBZcUcajRf+nP+BSvhsa8roEcor2rf9oLs98u8HrqjZgpHQJ4frbA2C8OuRlPGN9JzZKpTmeeJg2eITeJXlQsc88xX0hqZCogDUeUcTLghDhw2Vd7q5AWG6mDcc3F2HJ0q5GwkYTS7d6D9nXCGcSE/M/F2pgwBe5MI5S9h60cr+XhHrK3uDCW3QNMj6jRDIW" 3o5WquA5/MmQJJ38BwMzn/7HJwcL6aJ5EnA3KlLi413kK820f4h2E+u4dAT5Kmua7x8Lx1ny7oEZH/MBQoEMq0s7XuDD+d0gR/0VCHvQ6PhZf4wOwzGIO6jn/Fb/pywAgQqZRglRGZLbcoHHQCIgQIDAQAB\; – user2806026 Dec 04 '15 at 11:44
  • I tried adding the record exactly like you wrote it, but it doesn't seem to work.. Can I do anything else? – user2806026 Dec 04 '15 at 16:40