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  2. Dead letter queue - Wikipedia

    en.wikipedia.org/wiki/Dead_letter_queue

    The message is sent to a queue that does not exist. [2] [3] The maximum queue length is exceeded. The message exceeds the size limit. The message expires because it reached the TTL (time to live) [4] The message is rejected by another queue exchange. [5] The message has been read and rejected too many times. [6]

  3. History of Microsoft Exchange Server - Wikipedia

    en.wikipedia.org/wiki/History_of_Microsoft...

    The first release of Microsoft Exchange Server was version 4.0 in April 1996, when it was sold as an upgrade to Microsoft Mail 3.5. Before that, Microsoft Mail v2.0 (written by Microsoft) was replaced in 1991 by "Microsoft Mail for PC Networks v2.1", [1] based on Network Courier from its acquisition of Consumers Software. [2]

  4. Personal Storage Table - Wikipedia

    en.wikipedia.org/wiki/Personal_Storage_Table

    In computing, a Personal Storage Table (.pst) is an open proprietary file format used to store copies of messages, calendar events, and other items within Microsoft software such as Microsoft Exchange Client, Windows Messaging, and Microsoft Outlook. The open format is controlled by Microsoft who provide free specifications and free irrevocable ...

  5. AOL Mail limits on sending bulk mail

    help.aol.com/articles/aol-mail-limits-on-sending...

    If you've received a notification that a limit has been met, you'll need to wait a set amount of time before you can send more emails. Most sending limit notifications inform you of how long you'll have to wait. If you're planning to regularly send bulk email, consider looking into alternate solution.

  6. X.400 - Wikipedia

    en.wikipedia.org/wiki/X.400

    X.400 is a suite of ITU-T recommendations that define the ITU-T Message Handling System (MHS).. At one time, the designers of X.400 were expecting it to be the predominant form of email, but this role has been taken by the SMTP-based Internet e-mail. [1]

  7. Simple Mail Transfer Protocol - Wikipedia

    en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol

    Thus smtp2.example.com declares that it can accept a fixed maximum message size no larger than 14,680,064 octets (8-bit bytes). In the simplest case, an ESMTP server declares a maximum SIZE immediately after receiving an EHLO. According to RFC 1870, however, the numeric parameter to the SIZE extension in the EHLO response is optional.

  8. AOL Mail

    mail.aol.com/d?reason=invalid_cred

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Microsoft Exchange Server - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Exchange_Server

    Microsoft Exchange Server is a mail server and calendaring server developed by Microsoft. It runs exclusively on Windows Server operating systems. The first version was called Exchange Server 4.0, to position it as the successor to the related Microsoft Mail 3.5. Exchange initially used the X.400 directory service but switched to Active ...