In the section "How do I register a DQS key?" of the Readme.md the link in "After you register an account, go to this page" is obsoleted.
The old link referenced in Readme.md "https://portal.spamhaustech.com/src/manual/dqs/" has to be changed to "https://portal.spamhaustech.com/manuals/dqs" (without "src") and helpfully further information, where the DQS-key can be found would be helpful:
The DQS-key can be found in section "1.0 Datafeed Query Service" after "Your Datafeed Query Account Key is:"
In the section "How do I register a DQS key?" of the Readme.md the link in "After you register an account, go to this page" is obsoleted. The old link referenced in Readme.md "https://portal.spamhaustech.com/src/manual/dqs/" has to be changed to "https://portal.spamhaustech.com/manuals/dqs" (without "src") and helpfully further information, where the DQS-key can be found would be helpful: The DQS-key can be found in section "1.0 Datafeed Query Service" after "Your Datafeed Query Account Key is:"
Cheers Christoph.