View Public Key in Domain Key for a Domain

Question

Using Jeff's blog post I'm creating domain keys for my account. I wanted to verify the setup using Get or Host command with Bind for Windows but I'm lost one of the commands. I can see view the _domainkey. txt file with this command:

host -t txt _domainkey.stackoverflow.com

but I'm at a loss at how I'd find the selector record. Jeff points out it can be anything before the before the period in "._domainkey.domain.com" but how would I list all records if I didn't know the exact query name? Is there a wildcard I could use to view all TXT or all records under this section?

Answer 1

how would I list all records if I didn't know the exact query name?

The selector is defined on your mail server or client. Someone(something) receiving a message would know what selector to look up because it will be part of the DKIM-Signature header of the message, specifically it is the "s=" tag.

Since this is your own zone you could do a zone transfer or just examine the zone database directly to see what you have set.

See RFC 4871

• 3.1 Selectors http://tools.ietf.org/html/rfc4871#section-3.1
• 5.7 DKIM-Signature Header field http://tools.ietf.org/html/rfc4871#section-5.7