WifiDog Validation E-Mail Issue

It has come to my attention that new users have not been receiving validation e-mails when they sign up on our Public Wifi System. I plan to repair this problem on Saturday, the 19th.

Update:

The auth software was successfully upgraded and e-mail validation is working correctly. However, there appears to be a bug with New Account Signup. The problem is that when a user signs up for a new account, an error message comes up stating "Access Denied" or some problem with the portal. Simply go back on your web browser, logout and log back in with your new account and continue the validation process.

Update 2:
Hotmail users will not be able to receive a validation e-mail. I confirmed that e-mails were successfully sent by our authentication server, but were not received by Hotmail.

At this time, the following e-mail providers are known to accept the validation e-mail: Yahoo, Charter, Peoplepc, Mail.com and Gmail. Other e-mail accounts (such as AOL) should accept the message, but may be falsely flagged as spam, so be sure to check your spam/junk folders. The message is sent immediately after clicking the Signup button and should be received by your e-mail provider and arrive in your inbox within a couple minutes or less.