Comment 19 for bug 1721803

This time I'm unable to find the server on any obvious blacklists, but Gmail is rejecting the confirmation message addressed to you claiming "Our system has detected that this message is likely unsolicited mail. To reduce the amount of spam sent to Gmail, this message has been blocked."

Askbot confirmation messages are sent from the <email address hidden> address, so either adding it to your expected contacts list or creating a sender whitelist entry per https://support.google.com/a/answer/2364632 might help (I'm not a Gmail user and never have been, so this is merely what I was able to turn up with a Web search).