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Home » Docs » Error Library » Configuration Errors

Configuration Errors

Error 530-5.7.0: Must issue a STARTTLS command first
Error 454-5.5.1: STARTTLS May Not be Repeated
Error 554-5.7.0: Too Many Unauthenticated Commands
Error 512: Domain Can Not Be Found
Error 546: Email looping
Error 515: Destination Mailbox Address Invalid
Error 501-5.5.2: Cannot Decode Response
Error 400: Invalid_request
Error: SMTP Error 555
Error: SMTP Error 538
Error: SMTP Error 511
Error 405: Method Not Allowed
Error 504: Command Parameter Not Implemented
Error 502: Command Not Implemented
Error 501: Syntax Error in Parameters or Arguments
Error 553: Requested Action Not Taken
Error 500: Syntax Error, Command Unrecognized
Error 455: Server Unable To Accommodate the Parameters
Error: The From Address Does Not Match a Verified Sender Identity
Error: AADSTS50011: The Redirect URI Does Not Match
Error: Invalid_request: AADSTS50194
Error: Signature Does Not Match
Error: Redirect URI Mismatch
Error: API_key: Invalid
Error: Invalid Client Secret
Error: Channel Not Found
Error: MailboxNotEnabledForRESTAPI

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