Frequently Asked Questions

This points to an error while authenticating your email account. Try checking the following:

• The username is wrong/incomplete. For example, iCloud accounts sometimes work with "username" but most times need the whole email address as a log in.
• The password is wrong.
• If you're trying TLS, try STARTTLS instead.
• Maybe your server is using a custom port - though this is unlikely.

If you have a Mail program you use (e.g. Apple Mail) try comparing the outgoing mail settings there and use the same settings in Mail Designer.