I am trying to setup DKIM for email verification and have been asked to add a public key to my DNS.
Add public key in your DNS; here is a sample resource record with selector "default":
default._domainkey IN TXT "v=DKIM1; g=*; k=rsa; p=MIG...the_public_key_here...AQAB"
I have my domain name pointing to my personal web server at my static up and it is hosted through apache. Do I need to edit some file on the apache server, or add something through the domain.com's control panel?