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The server either does not recognize the request method, or it lacks the ability to fulfil the request. Usually this implies future availability (e.g., a new feature of a web-service API). 502 Bad Gateway The server was acting as a gateway or proxy and received an invalid response from the upstream server. 503 Service Unavailable
480 Temporarily Unavailable Callee currently unavailable. [1]: §21.4.18 481 Call/Transaction Does Not Exist Server received a request that does not match any dialog or transaction. [1]: §21.4.19 482 Loop Detected Server has detected a loop. [1]: §21.4.20 483 Too Many Hops Max-Forwards header has reached the value '0'. [1]: §21.4.21
The meaning of the "detail" field depends on the class and the subject, and are listed in RFC 3463 and RFC 5248. A server capable of replying with an Enhanced Status Code MUST preface (prepend) the Text Part of SMTP Server responses with the Enhanced Status Code followed by one or more spaces.
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Service available, closing control connection. This may be a reply to any command if the service knows it must shut down. 425: Can't open data connection. 426: Connection closed; transfer aborted. 430: Invalid username or password 431: Need some unavailable resource to process security. 434: Requested host unavailable. 450: Requested file ...
The ESP8266 and ESP32 microcontrollers will display "Guru Meditation Error: Core X panic'ed" (where X is 0 or 1 depending on which core crashed) along with a core dump and stack trace. [6] VirtualBox uses the term "Guru Meditation" for severe errors in the virtual machine monitor, for example caused by a triple fault in the virtual machine.
503 may refer to: 503 (number) 503, a year; 503, a track by Hans Zimmer on the Angels & Demons soundtrack; 503 Service Unavailable, an HTTP status code; Area code 503, a North American telephone area code in northwestern Oregon; BMW 503, a grand tourer; Fiat 503, a small family car; Country code +503, for El Salvador
In today’s CEO Daily: Diane Brady on Commerce Secretary Howard Lutnick and the Canadian reaction to trade tariffs. The big story: Worst-case scenario for Ukraine, best-case scenario for Russia.