2015
SPF Record Testing Tools - Is this SPF record valid - syntactically correct ?
by dzc & 2 others Is this SPF record valid - syntactically correct ? + test for evaluating the performance of your record
Sender ID Framework SPF Record Wizard
by dzcThis four-step wizard will guide you through the process of creating a new SPF record for your DNS domain. You should add this DNS record to your domain's DNS configuration.
2009
Web Based Cryptographic Hash Calculator Function
by dzc & 1 other (via) MD5 / SHA1 / SHA-256 / SHA-384 / SHA-512
2008
1
(7 marks)