For whatever reason, my parents cannot send email using Mail 4.5. They have a Gmail IMAP account and the account is configured properly. I even tried deleting the mail plist file, but that didn't do anything. I have completely removed the account, re-added it, but I still cannot send mail. The outgoing server is correct, password is correct, port is correct, etc. I have no idea what's causing this and it's frustrating as hell (partly because they won't stop bitching and complaining until I fix it). Someone please help me!