Definitions

flat ASCII

Ezmlm

ezmlm is a software package for managing electronic mailing lists by Daniel J. Bernstein. It is similar to GNU Mailman and Majordomo but only works with the qmail mail transfer agent. It is released into the public domain.

The latest version, 0.53, came out in 1997. The ezmlm-idx patches add modern features like MIME handling.

Features

ezmlm provides all of the common electronic mailing list functionality: moderated lists, automated subscription and unsubscription, and digest creation. ezmlm takes advantage of the features of qmail to enable ordinary users to create and to manage mailing lists, without need for superuser privileges.

Unlike some other mailing list management softwares, ezmlm's user interface is command-based. The mailing list administrator usually does not have to edit files. For example, the command to create a new mailing list is

ezmlm-make ~/list ~/.qmail-list `whoami`-list host
and the commands to (manually) subscribe someone to and unsubscribe someone from that list are
ezmlm-sub ~/list mailbox
and
ezmlm-unsub ~/list mailbox

The operation of each individual mailing list is controlled by files in the list's directory (~/list in the aforegiven example). That directory also contains an archive of all messages sent to the list.

Whether a list is moderated or not is controlled by the existence of a file in the list's directory, named public. In the aforegiven example, this file would be ~/list/public. If the file exists, the list is not moderated, and anyone can subscribe to and unsubscribe from the mailing list my sending (empty) electronic mail messages to special -subscribe and -unsubscribe electronic mailboxes. If the file does not exist, the list is moderated, and only the list owner can change subscriptions using the ezmlm-sub and ezmlm-unsub commands. The ezmlm-idx extension provides more moderation mechanisms.

Standard ezmlm does not include a web interface, but the ezmlm-web extension provides that functionality.

Ezmlm works very fast since it makes use of database type files, while many other mailing list managers use flat ascii files. Ezmlm also has a very good security record.

References

Further reading

External links

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