We're beginning the planning stages of changing our users email addresses to a different domain (same username) however with I try to edit my email address I get an error that I'm  not allow to use that email address on this site. 

Anyone have any insight as to why, or how we can make that change?

Are you allowing only certain email domains perhaps?

 

That's a great question, unfortunately I didn't set up the site, nor am I overly familiar with the administration. It's used as an internal forum for employees. We setup thier access and give them their username and password. I will look at this, thanks!

If you are unable to locate the issue from the above, please PM me the email you are trying to change to, and I can take a look