Hi, None of my web scripts (Wordpress, etc.) can send to internal recipients (users' emails) but can send to external recipients just fine. The email just disappears. In Squirrelmail, users can send to each other internally as well as externally without problems. I tried to have web scripts send out via Google's SMTP but that gave the exact same behavior. Perhaps it's related: Wordpress asks for FTP user login information every time I tried to remove a plugin. It also says it can't write to .htaccess. I created the client account, client website and database while logged in as admin in ISPConfig. Did that mess things up? Thanks in advance!