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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
503 Service Unavailable The server is undergoing maintenance or is temporarily overloaded and so cannot process the request. A "Retry-After" header field may specify when the client may reattempt its request. [1]: §21.5.4 504 Server Time-out
220 <domain> Service ready 221 <domain> Service closing transmission channel 221 2.0.0 Goodbye [1] 235 2.7.0 Authentication succeeded [3] 240 QUIT 250 Requested mail action okay, completed 251 User not local; will forward 252 Cannot verify the user, but it will try to deliver the message anyway
Fastly, which has been widely reported as the source of the problem, updated its service status page, saying: “The issue has been identified and a fix is being implemented.”
When you get a message from a "MAILER-DAEMON" or a "Mail Delivery Subsystem" with a subject similar to "Failed Delivery," this means that an email you sent was undeliverable and has been bounced back to you. These messages are sent automatically and often include the reason for the delivery failure.
Sometimes the old "turn it off and on again" actually works! Restarting your web browser or computer will clear our the internal cache or memory and will often fix most random computer problems.
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 ...
AOL Mail welcomes Verizon customers to our safe and delightful email experience!