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- Local_Mail_Transfer_Protocol abstract "The Local Mail Transfer Protocol (LMTP) is a derivative of ESMTP, the extension of the Simple Mail Transfer Protocol. It is defined in RFC 2033.LMTP is designed as an alternative to normal SMTP for situations where the receiving side does not have a mail queue, such as a mail storage server acting as a Mail Delivery Agent. Mail queues are an inherent requisite of SMTP. In situations in which mail queues are not possible, LMTP is desirable, since a mail storage server should manage only its mail store without having to allocate more storage for a mail queue. This is not possible with SMTP when there are multiple recipients for a mail message. SMTP can only indicate successful delivery or failure for all or none of the recipients, creating the need for a separate queue to handle the failed recipients. LMTP, on the other hand, can indicate success or failure to the client for each recipient, allowing the client to handle the queueing instead. The client in this case would typically be an Internet-facing mail gateway. LMTP is not intended for use over wide area networks. In other words, the MTA still handles all outgoing mail, including the mail stream from the LMTP, to another mail server located somewhere on the Internet.LMTP is an Application Layer protocol of the Internet Protocol Suite. It uses a Transmission Control Protocol (TCP) transport like SMTP, but must not use port number 25, the well-known port for SMTP.LMTP conversation syntax is based on the same commands as Extended SMTP with the following exceptions: ESMTP's EHLO verb is replaced with LHLO. ESMTP requires a single status for the entire message body. LMTP requires a response for each previously successful RCPT command. That is, in case of multiple recipients, after the body of the message has been transmitted, LMTP can still fail for some recipient while succeeding for the others. With this facility, LMTP can fail if a user is over quota without the burden of generating Bounce messages.The key difference is that LMTP will reject a message if it is not immediately deliverable to its final destination. This removes the need for a mail queue. For this reason, LMTP is not run on the standard TCP port of SMTP.".
- Local_Mail_Transfer_Protocol wikiPageID "419184".
- Local_Mail_Transfer_Protocol wikiPageRevisionID "540557631".
- Local_Mail_Transfer_Protocol hasPhotoCollection Local_Mail_Transfer_Protocol.
- Local_Mail_Transfer_Protocol subject Category:Internet_mail_protocols.
- Local_Mail_Transfer_Protocol type Abstraction100002137.
- Local_Mail_Transfer_Protocol type Communication100033020.
- Local_Mail_Transfer_Protocol type Direction106786629.
- Local_Mail_Transfer_Protocol type InternetMailProtocols.
- Local_Mail_Transfer_Protocol type Message106598915.
- Local_Mail_Transfer_Protocol type Protocol106665108.
- Local_Mail_Transfer_Protocol type Rule106652242.
- Local_Mail_Transfer_Protocol comment "The Local Mail Transfer Protocol (LMTP) is a derivative of ESMTP, the extension of the Simple Mail Transfer Protocol. It is defined in RFC 2033.LMTP is designed as an alternative to normal SMTP for situations where the receiving side does not have a mail queue, such as a mail storage server acting as a Mail Delivery Agent. Mail queues are an inherent requisite of SMTP.".
- Local_Mail_Transfer_Protocol label "LMTP".
- Local_Mail_Transfer_Protocol label "LMTP".
- Local_Mail_Transfer_Protocol label "LMTP".
- Local_Mail_Transfer_Protocol label "Local Mail Transfer Protocol".
- Local_Mail_Transfer_Protocol label "Local Mail Transfer Protocol".
- Local_Mail_Transfer_Protocol label "Local Mail Transfer Protocol".
- Local_Mail_Transfer_Protocol label "Local Mail Transfer Protocol".
- Local_Mail_Transfer_Protocol sameAs Local_Mail_Transfer_Protocol.
- Local_Mail_Transfer_Protocol sameAs LMTP.
- Local_Mail_Transfer_Protocol sameAs Local_Mail_Transfer_Protocol.
- Local_Mail_Transfer_Protocol sameAs Local_Mail_Transfer_Protocol.
- Local_Mail_Transfer_Protocol sameAs m.0265n5.
- Local_Mail_Transfer_Protocol sameAs Q1867169.
- Local_Mail_Transfer_Protocol sameAs Q1867169.
- Local_Mail_Transfer_Protocol sameAs Local_Mail_Transfer_Protocol.
- Local_Mail_Transfer_Protocol wasDerivedFrom Local_Mail_Transfer_Protocol?oldid=540557631.
- Local_Mail_Transfer_Protocol isPrimaryTopicOf Local_Mail_Transfer_Protocol.