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  2. Time formatting and storage bugs - Wikipedia

    en.wikipedia.org/wiki/Time_formatting_and...

    On 18 September 2042, the Time of Day Clock (TODC) on the S/370 IBM mainframe and its successors, including the current zSeries, will roll over. [5] [61] Older TODCs were implemented as a 64-bit count of 2 −12 microsecond (0.244 ns) units, and the standard base was 1 January 1900, UT. In July 1999 the extended TODC clock was announced, which ...

  3. Time to live - Wikipedia

    en.wikipedia.org/wiki/Time_to_live

    The original DARPA Internet Protocol's RFC describes [1]: §1.4 TTL as: . The Time to Live is an indication of an upper bound on the lifetime of an internet datagram.It is set by the sender of the datagram and reduced at the points along the route where it is processed.

  4. Gmail - Wikipedia

    en.wikipedia.org/wiki/Gmail

    Gmail is the email service provided by Google.As of 2019, it had 1.5 billion active users worldwide, making it the largest email service in the world. [1] It also provides a webmail interface, accessible through a web browser, and is also accessible through the official mobile application.

  5. Google services outages - Wikipedia

    en.wikipedia.org/wiki/Google_services_outages

    The first was a five-minute outage of every Google service in August 2013. The second was a 25-minute outage of Gmail, Google+, Google Calendar, and Google Docs in January 2014. The third was a YouTube outage in October 2018. The fourth was a Gmail/Google Drive outage in August 2020. The fifth, in November 2020, affected mainly YouTube, and the ...

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

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

    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.

  7. Control excessive spam email - AOL Help

    help.aol.com/articles/Control-excessive-spam-email

    If you've started to receive an endless flow of junk email, you may be the victim of spam bombing. This is a tactic used by bad actors and hackers to distract you from seeing emails that really are important to you.

  8. Google Workspace - Wikipedia

    en.wikipedia.org/wiki/Google_Workspace

    Google Calendar is an online calendar intended to help keep track of time and schedules. It was launched in April 2006, and integrates with Gmail for users to easily add events from email messages directly to the calendar. [68] As part of Google Workspace, Google Calendar comes with additional features designed for business use, including: [69]

  9. Return period - Wikipedia

    en.wikipedia.org/wiki/Return_period

    The theoretical return period between occurrences is the inverse of the average frequency of occurrence. For example, a 10-year flood has a 1/10 = 0.1 or 10% chance of being exceeded in any one year and a 50-year flood has a 0.02 or 2% chance of being exceeded in any one year.