Organization name has changed or merged and they need to change everyone's email.
1. Take a backup or Passageways DB (PortalFX)
2. Run the following script on main Passageways (PortalFX) DB:
Colored items need to be changed per situation
SET email = REPLACE(email, '@olddomain.com', '@newdomain.com')
WHERE email like '%@olddomain.com%'
3. Refresh Portal Cache.
4. Verify emails are changed in portal.