# API Error Codes

- `InvalidToken`
- `MissingPrivileges`: Not enough privileges
- `InputValidationError` (various descriptions about invalid input validation)
- `InternalDatabaseError`
- `InternalError`
- `UserNotFound`: This user does not exist
- `UserExistsError`: This username already exists
- `AddressExistsError`: Address already exists
- `AddressNotFound`: Invalid or unknown email address identifier
- `ChangeNotAllowed`: Can not change special address
- `WildcardNotPermitted`: Can not set wildcard address as default
- `AspNotFound`: Invalid or unknown ASP key
- `InvalidAuthScope`: Profile file requires either imap or pop3 and smtp scopes
- `AuthFailed`: Authentication failed
- `DkimNotFound`: This domain does not exist
- `AliasExists`: This domain alias already exists
- `AliasNotFound`: This alias does not exist
- `FilterNotFound`: This filter does not exist
- `NoSuchMailbox`: This mailbox does not exist
- `MessageNotFound`: Invalid message identifier
- `OVERQUOTA`: User is over quota
- `EmptyMessage`: Empty message provided
- `FileNotFound`: This file does not exist
- `InsecurePasswordError`: Provided password was found from breached passwords list
- `ERRREDIS`
- `ERRSENDINGLIMIT`: You reached a daily sending limit for your account
- `ERRCOMPOSE`: Could not queue message for delivery
- `SUBMITFAIL`
- `KeyGenereateError`: Failed to generate private or public key
- `InternalConfigError`: Invalid encryption settings
- `HashError`
- `UserUpdateFail`: Could not update user
- `TotpEnabled`: TOTP 2FA is already enabled for this user
- `QRError`: Failed to generate QR code
- `TotpDisabled`: TOTP 2FA is not initialized for this user
- `RateLimitedError`: Authentication was rate limited.
- `U2fEnabled`: U2F 2FA is already enabled for this user
- `U2fDisabled`: U2F 2FA is not initialized for this user
- `InvalidU2fRequest`: Failed to validate U2F response
- `NoUpdates`: Nothing was updated