There is a vBulletin setting that, for some reason, cannot be changed and is meant to catch spam bots. Unfortunately, this setting has flagged almost every email service, including gmail.

If you do not get an activation email, send me, or any moderator, a PM from the forum account you want activated; we'll forward it to admin to have it activated. Once activated, you'll need 10 posts approved, which is another setting admin cannot change thru vBulletin, but I'll be happy to "fast-track" post approvals in the OT subforum if requested.