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  2. Amazon Elastic Compute Cloud - Wikipedia

    en.wikipedia.org/wiki/Amazon_Elastic_Compute_Cloud

    Instance-store volumes are temporary storage, which survive rebooting an EC2 instance, but when the instance is stopped or terminated (e.g., by an API call, or due to a failure), this store is lost. The Amazon Elastic Block Store (EBS) provides raw block devices that can be attached to Amazon EC2 instances. These block devices can then be used ...

  3. Amazon Simple Queue Service - Wikipedia

    en.wikipedia.org/wiki/Amazon_Simple_Queue_Service

    Amazon Simple Queue Service (Amazon SQS) is a distributed message queuing service introduced by Amazon.com as a beta in late 2004, and generally available in mid 2006. [1] [2] It supports programmatic sending of messages via web service applications as a way to communicate over the Internet.

  4. Why did I receive an email from MAILER-DAEMON? - AOL Help

    help.aol.com/articles/what-is-a-mailer-daemon...

    If the delivery failure message says the account doesn't exist double check the spelling of the address you entered. A single misplaced letter could cause a delivery failure. If the message keeps getting bounced back, make sure the account is closed or hasn't been moved.

  5. Amazon S3 - Wikipedia

    en.wikipedia.org/wiki/Amazon_S3

    Amazon Simple Storage Service (S3) is a service offered by Amazon Web Services (AWS) that provides object storage through a web service interface. [1] [2] Amazon S3 uses the same scalable storage infrastructure that Amazon.com uses to run its e-commerce network. [3]

  6. List of SMTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SMTP_server_return...

    C: This is a test message with 5 header fields and 4 lines in the message body. C: Your friend, C: Bob C: . S: 250 Ok: queued as 12345 C: QUIT S: 221 Bye {The server closes the connection} And below is an example of an SMTP connection in which the SMTP Server supports the Enhanced Status Code, taken from RFC 2034:

  7. Bounce message - Wikipedia

    en.wikipedia.org/wiki/Bounce_message

    A DSN may be a MIME multipart/report message composed of three parts: a human readable explanation; a machine parsable message/delivery-status, a list of "name: type; value" lines that state several possible fields; and; the original message, or a portion thereof, as an entity of type message/rfc822. The second part of a DSN is also quite readable.

  8. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    513 Message Too Large The request message length is longer than the server can process. [1]: §21.5.7 555 Push Notification Service Not Supported The server does not support the push notification service identified in a 'pn-provider' SIP URI parameter [22]: §14.2.1 580 Precondition Failure

  9. Computer security - Wikipedia

    en.wikipedia.org/wiki/Computer_security

    An example of a physical security measure: a metal lock on the back of a personal computer to prevent hardware tampering. Computer security (also cybersecurity, digital security, or information technology (IT) security) is the protection of computer software, systems and networks from threats that can lead to unauthorized information disclosure, theft or damage to hardware, software, or data ...