LOVE this extension!! I'm a total newbie. I apologize in advance. The site (trade union) I am creating needs to exclude emails from a domain "oaklandcc.edu" to be exact. I have implemented another extension to not allow registration with this email domain. However, once a user account is created (using another email) the user can change their email on the profile to anything they want. My users (union members, some older and stubborn) will try and change it back to "oaklandcc.edu" which creates legal problems because in the US, a union cannot send emails to company addresses.
So short question, is there any way to verify at save profile that the email does not contain "oaklandcc.edu"
Related question 1: is there a way to verify at save profile that the phone number contains 10 digits - all numbers?
Related question 2: is there a way to verify that any field contains an exact set of characters?