RFC 3656

The Mailbox Update (MUPDATE) Distributed Mailbox Database Protocol, December 2003

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Updated by:
RFC 8996
R. Siemborski

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DOI:  https://doi.org/10.17487/RFC3656

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As the demand for high-performance mail delivery agents increases, it becomes apparent that single-machine solutions are inadequate to the task, both because of capacity limits and that the failure of the single machine means a loss of mail delivery for all users. It is preferable to allow many machines to share the responsibility of mail delivery. The Mailbox Update (MUPDATE) protocol allows a group of Internet Message Access Protocol (IMAP) or Post Office Protocol - Version 3 (POP3) servers to function with a unified mailbox namespace. This document is intended to serve as a reference guide to that protocol.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.

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