July 9, 2021 . 1 MIN READ
http://amilanov.com/articles/how-to-setup-dkim-signing-on-ubuntu/
http://dkimcore.org/tools/keycheck.html
http://support.google.com/a/bin/answer.py?hl=en&answer=174124
http://googleappsupdates.blogspot.com/2011/01/email-authentication-using-dkim-now.html
http://www.dyndnscommunity.com/questions/26497/advance-configuration-google-apps-dkim-spf.html
http://blog.jhltechservices.com/2011/01/how-to-verify-dkim-is-working-for-your.html
http://www.readwriteweb.com/enterprise/2011/01/google-apps-users-can-now-sign-e-mail-with-dkim.php
http://www.blog.rogersit.net/kloxo-qmail-setup-dkim-mail-server/2011/12/18/
