- /* Quick hack to override the outdated explanation URL.
- See https://www.mail-archive.com/mailop@mailop.org/msg08019.html */
- SPF_server_set_explanation(spf_server, "Please%_see%_http://www.open-spf.org/Why?id=%{S}&ip=%{C}&receiver=%{R}", &spf_response);
+ /* Override the outdated explanation URL.
+ See https://www.mail-archive.com/mailop@mailop.org/msg08019.html
+ Used to work as "Please%_see%_http://www.open-spf.org/Why?id=%{S}&ip=%{C}&receiver=%{R}",
+ but is broken now (May 18th, 2020) */
+ SPF_server_set_explanation(spf_server, "Please%_see%_http://www.open-spf.org/Why", &spf_response);