I made a wiki and prepared to have people register. It got attacked by bots or some other source of users with funny names and funny domains. I fixed that problem by installing a captcha. I deleted a thousand or more phony users. Now, however, Reddit seems to reject input based on some kind of "black spot" on my website. It may have migrated to my user identity of Reddit. Also, if I copy my "webmaster email address" from my wiki, and paste that into an email message, e.g. website@earthlink.net tries to send a test message to me@earthlink.net, then the message will be rejected. However, if I just open my email browser, type in website@earthlink.net as recipient, then I can mail it successfully from me@earthlink.net.
Does anyone.have any idea of how to fix this problem?