MMDF
| MMDF | |
|---|---|
| Basic data
|
|
| Maintainer | Kai Kruger |
| Publishing year | 1979 |
| Current version | 2.44 |
| operating system | Unix |
| programming language | C. |
| License | BSD license |
| mmdf.sourceforge.net | |
MMDF (“Multichannel Memo Distribution Facility”) is a mail transfer agent that originated at the University of Delaware . MMDF was presented at a symposium of the Association for Computing Machinery and the Institute of Electrical and Electronics Engineers in late 1979 . David Crocker started the conception in 1978 and completed the programming in the spring of 1979.
Working method
MMDF offers transparent access to various network and transmission protocols regardless of the Mail User Agent (MUA) used. One or more MUAs can thus be used on a single system.
reception
MMDF receives the incoming messages from each channel's input program. The Submit program determines the recipient and assigns a corresponding channel for delivery. MMDF then selects the channel:
- local - for local delivery.
- badusers - if there is no local user.
- badhosts - for further recipient identification treatment.
- a network channel for non-local delivery: e.g. B. UUCP .
The Submit program now places the message in the corresponding channel queue. The Deliver program then transfers the mail from each queue to the appropriate channel for delivery to the user.
shipping
The Deliver program is executed time-controlled in order to transmit messages from the channel queue to the corresponding channel program, which then forwards them to the destination.
Individual evidence
- ↑ Jonathan Postel : RFC 767 - Structured format for transmission of multi-media documents . Internet Engineering Task Force . S. August 31, 1980. Retrieved January 16, 2012.
- ^ David H. Crocker: Some History . Kai Kruger. January 21, 1996. Retrieved January 16, 2012.