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1.1 Introduction.

This chapter helps the (potential) subscriber to ezmlm/idx lists to learn the basic functions of the mailing list manager. It contains information on how to start and stop subscribing to ezmlm/idx list, how to access the list archive, how to send messages to the list, and how to contact the list owner, if necessary. Features marked ``(*)'' are available only if the list uses ezmlm-idx in addition to ezmlm. See More information for more information on ezmlm and ezmlm-idx. Ezmlm is a modern mailing list manager. Its purpose is to efficiently send a message to a large number of recipients with minimal delay. It allows automated additions and subtractions from the subscriber database. In addition, it may keep an archive of messages. It can also impose restrictions on what may be sent or retrieved and by whom. Some list manager keep a database of subscriber information and tailor the message specifically for each subscriber. Ezmlm sends the same message to all subscriber. Digests(*), ordered collections of messages, are handled as a separate list. The only information ezmlm keeps about you is your subscriber address, and if applicable, which messages that couldn't be delivered to you due to e.g. problems with your mail server. Ezmlm is highly automated. Virtually everything can be done simply, rapidly, and without human intervention. Ezmlm encodes your address and the message number in the return address to automatically handle bounces, i.e. messages returned to sender because they couldn't be delivered to the subscriber. This can be used to find out the message number, as well as the address you're subscribed under (see below).

1.2 Sending commands to an ezmlm/idx mailing list.

Ezmlm has a different address for each command. In essence, the address is the list address and the command. This is straight forward to interpret and therefore very fast. It also makes it very easy to send commands from the command line without having to worry about the subject and the message body. If you want to interact with the ezmlm mailing list, send an empty message (contents and subject are ignored) to, replacing ``'' with the list address, and ``command'' with the desired command. For some commands, you can add arguments. Here are a few examples, which will be discussed further below:
Subscribe me.
Subscribe Here the default subscriber address (the one you send from) is overridden by an argument to the -subscribe command. To subscribe any address of type just replace the ``@'' in the address with ``='' and add it after a hyphen to the command. In this case Of course, ezmlm will ask to confirm the request.
Unsubscribe me.
Tell me if my address is subscribed to the list or not.
Get message 123 from the archive.*)
Get the latest message from the archive. If the list has a digest, the messages returned are the messages received since the latest digest.*)
Get messages 45-67 from the archive. No more than 100 messages can be returned per request.*)
Send subject and author name for the last 100-200 messages. No more than 2000 entries are returned per request.*)
Send subject and author of messages 300-399.*)
Receive an ordered set of all messages that have the same subject as message 45. ``Re:'', etc, do not make a difference, so the returned set is the usually entire thread.*)
Send me some information about this list (the list owner decides how this command is supported).*)
Send me the list of frequently-asked questions (and answers) for this list (the list owner decides how this command is supported).

1.3 Subscribing to an ezmlm mailing list.

As mentioned previously, ezmlm commands are put into the ADDRESS. To subscribe to, send an (empty) message to Ezmlm will send a confirmation request back to you. To confirm your subscription, just reply to the ``Reply-To:'' address. Usually, the ``reply'' function of your mail program will do this. When ezmlm receives your confirmation, it will add your address to the subscriber database and send you a message to tell you that you are a subscriber. If your mail program supports it, you may be able to just click on the address in the message. The confirmation is used so that only you (and the list administrator) can add/remove your address from the list of subscribers. Sometimes, you may want to subscribe an address other than the one you are sending from. Let's say you're sitting at and that all your mail is forwarded here from (when you are not in the office). You'd like to be the subscriber (so that you get the messages at work). To do this, send mail to: Ezmlm will send the confirmation request to which will be forwarded and reach you at When you reply, is added as a subscriber. The ezmlm verification mechanism tests the only relevant issue: That the person at the subscriber address really wants to be a subscriber. After the confirmation reply is received, ezmlm will send a message to the subscriber address to let the recipient know that s/he is a subscriber. Some ezmlm mailing lists may use subscription moderation(*). Subscription to these lists is identical to the process described above, except that after confirmation the request is passed on to the list moderator(s). You become a subscriber only after one of the moderators has approved your request. If you want to send any additional information to the moderator, do so in your confirmation message. Ezmlm will notify you once you are a subscriber.

1.4 Unsubscribing from an ezmlm mailing list.

You've guessed it already! To unsubscribe from just send a message to, then reply to the confirmation request. Ezmlm will send you a message to let you know that you are no longer a subscriber. Ezmlm will also let you know if the address was not in the subscriber list. If so, you are probably subscribed under another address. To find out your subscription address, look at the very first header of any message from the list. This should contain something like which tells you that the message number is ``2345'' and the subscriber address is Now you remember that you subscribed a different address, and construct the appropriate command address to remove that address from the subscriber database: Replying to the confirmation request will return the desired acknowledgement that the address has been removed from the subscriber database. There is another way to find which one of many possibilities is your subscription address. Imagine you have addresses,, and all forwarded to You get the messages, but you don't know to which address they are sent. You could figure it out from the ``Delivered-To:'' and ``Received:'' headers. You can also send -unsubscribe requests for each potential subscription address and reply to the confirmation requests. The message sent by ezmlm in response to you -unsubscribe confirmations will tell you if you -unsubscribe attempt was successful. With ezmlm-idx(*) you can also send mail to,, and so on. For each message, you will receive a reply telling you if the address is subscribed or not. Construct a ``-unsubscribe'' message from the one that gave you a positive reply and you're off the list! If you for some reason are not successful with these attempts you can as a last resort contact Please describe your problem and include a FORWARDED message from the list and a list of the possible addresses you might be subscribed under. The list owner will be able to help you get off the list, and can usually figure out your subscription address from the information sent. Unsubscribe from subscription moderated lists works the same way as for normal lists. You never need approval to remove your address from the list. When a list is set up to allow posts from subscribers only(*), a post from an address ( may be rejected since this address is not a subscriber (even though mail to the subscriber reaches you, ezmlm has no way of knowing this). The easiest way to deal with this is to unsubscribe and subscribe If this is not possible/desirable, send the addresses in question with a note to The list owner can add your sender address (in this case to an extra address lists of non-subscribers allowed to post (and access the archive).

1.5 Sending messages to an ezmlm mailing list.

To send messages to an ezmlm list, you must know its name. If the list is called, just send a message to Any message accepted at this address is sent to all list subscribers. Due to the efficiency of ezmlm, you usually get back the message you sent to the list within a few minutes. Of course, this is true only is you are a subscriber. Most ezmlm lists require that you specify a ``Subject'', a few words that give everyone an idea what your message is about. This is a good thing, since many subscribers automatically delete mailing list messages without subject. Conversely, a good subject causes those interested/able to help with your comment/problem to read the message. If you send a message without a subject, ezmlm will send it back to you with an error message. ezmlm also rejects messages to the list if the subject is a single command word only, such as ``subscribe'' or ``help''. These are almost always misdirected commands from novice users. Instead of ``flames'' from many subscribers, the sender gets an informative error message. As you know, your should send mail to to unsubscribe from the list and a message to to get help and command information. The list owner may place additional restrictions on messages to the list. Ezmlm allows rejection of messages that are not from subscribers(*), that are too long/short(*), or that contain certain MIME parts(*). If your message is not acceptable by these criteria, ezmlm will send your message back to you and tell you why it failed. You can then correct the problem and try again. You can also mail to reach the list owner and ask for assistance. Replace ``mailinglist'' and ``'' with the real list and host name, respectively. In all messages to the owner, please include a FORWARDED copy of the error/problem message (see below). Note: ezmlm lists handle almost everything themselves. Therefore, the list-owner may check the mail only infrequently. Use ezmlm if at all possible, and be patient when you wait for a reply from the owner. In special cases, the list owner may set up the list to be message moderated(*). When you subscribe, you should be told if the list is moderated. Also, ezmlm adds a special ``Delivered-To: moderator for ...'' header to the messages. On a message moderated list, your message, instead of going directly to the list, is sent to one or more moderators. They can accept or reject, but not modify the message. If the message is accepted, it is sent to the list unmodified. If it is rejected, it is sent back to you, optionally with an explanation from the moderator. On moderated lists it may take a little longer for the message to reach all the subscribers, since it has to be read and approved by at least one moderator before being sent out to the subscribers. Message moderation is very useful for e.g. announcement lists, or lists where for other reasons not all posts are accepted.

1.6 Replying to a message from an ezmlm mailing list.

Messages sent via an ezmlm mailing list come ``From:'' the original sender. For many lists, it is appropriate to discuss privately with the original sender, then post a follow-up message with e.g. a solution to the list. In this case, just ``Reply'' to the sender. Without this behavior two things may happen: First, a subscriber may intend to reply to the original sender only, but sends a message to the entire list. This can be very embarrassing. Second, misconfigured subscriber programs sometimes send ``John is on vacation'' messages back to the ``From:'' address. The ezmlm setup allows these to go to the original sender (a minor nuisance) rather than to the list (a major nuisance with the potential for mail loops if the subscriber software is severely misconfigured). In other cases, you may want to send the reply to all subscribers. The easiest is to type in the list address by hand or to use the ``Reply-to-all'' function of your mail reader. If you do this, delete your address as well as the original sender's address so that the message goes to the list only. Since messages reach subscribers within minutes, it is usually superfluous to send a reply directly to the sender as well.

1.7 Accessing the ezmlm message archive.

By default, ezmlm mailing lists keep an archive of all the messages sent to the list. Some of them may have been removed by the list owner, but usually at least the last few month's message will be there. With ezmlm you can retrieve one message at a time with the -get command. With ezmlm-idx(*) you can access the archive in three different ways: You can get an ``-index'' listing message subjects and authors only. This information is sent as sets of 100 messages with up to 2000 entries per request. You can also ``-get'' a range of messages(*) (up to 100 per request) which will be sorted by subject (``Re:'' and other ``subject modifiers'' are ignored) and time received. Finally, you can retrieve a set of messages or a ``thread'' containing a specific message. This usually gives you an ordered set starting with the first post, and then all replies in order received. To access the archive, again remember that commands are put into the ADDRESS. Here are examples of the commands:
Get message 123.*)
Get the subject and author information for the last 100-200 messages. This also tells you the latest message number.*)
Get the index for messages 200-299.*)
Get the index for messages 200-299.*)
Get the messages accumulated since the latest digest (returns latest message if there are no digests for the list). The normal format is MIME with only the important headers. If you instead of the -get command use -getr you get the digest as a single long message without MIME. The -getv command gives you the MIME format, but now all the headers of the individual messages are returned.*)
Get messages 123-456. Because you can only get up to 100 messages per request, only messages 123-222 will be send. Send new requests to get the remainder.*)
Get the thread containing message 123. To change the format, use the -threadr or -threadv format instead. These work just like their -get cousins (see above).
If you haven't been following the list for a while, or you just want to see the discussion of a specific question, the easiest is to start with -index(*). If not found, send further -index(*) requests going backwards in the archive. Once you've found one message (e.g. ``667'') in the thread use the -thread(*) command: to get the entire set. If you're a digest subscriber and find an interesting discussion, use -thread or the address to catch up with the latest messages in that thread or on the list. The -thread(*) command is also useful if you catch the tail end of a discussion and want to read earlier messages. Some lists may be set up to allow archive access to subscribers only(*). If you are not a subscriber, you can simply subscribe. If you are a subscriber, but are denied archive access, you are subscribed under an address different from the one you are sending from. Easiest is to unsubscribe (see above) the current subscriber address and subscribe the address you're sending from. Alternatively, some mail programs (e.g. Mutt) allow you to change the SENDER address depending on where you are sending mail. Last, if this address difference is necessary, you may FORWARD a list message, and a note with the two addresses and a request to The owner will add your second address to a special address list of senders allowed to access the archive (and post) even though they are not subscribers. Remember to replace ``'' with the list address.

1.8 Getting ezmlm digests a few times per weekrather than individual messages(*).

Ezmlm list may be set up with a digest function. This is basically a second mailing list. The difference is that this list does not accept messages but sends out ``digests'', ordered collections of messages sent to the main list. Usually, a ``digest'' is sent out every other day. This is very convenient for users who want to follow a list, but not participate in the discussion. A digest is sorted, so it's easy to read what interests you. Simple ezmlm/idx lists test if the conditions for a digest are met whenever a message arrives. Thus, the digests do not arrive at a specific time, but rather approximately every two days, or more often if there is a lot of traffic. The digest of a list ``list'' is called ``list-digest'', and the commands are the same as for the main list. Thus, to subscribe to (the digest of send a message to:, or to subscribe the address send to: Of course, ezmlm will send a confirmation request, and then a message notifying the user that s/he is a subscriber.

1.9 Unsubscribing from an ezmlm digest list.

You unsubscribe to the digest in the same manner as you unsubscribe from the main list, but using the digest list name. Thus, to unsubscribe your current address from send mail to: Again, you can unsubscribe by instead mailing Ezmlm confirmation works as usual. If subscription to the main list is moderated(*), subscription to the digest list is moderated as well.

1.10 Temporarily halting message delivery.

Just unsubscribe from the list or list-digest, then subscribe when you want mail to resume. If desired, get missed messages from the archive with -get or just subject/author info with -index(*). Due to the fast replies from ezmlm this is easier and more efficient than having ``dormant'' subscribers.

1.11 Contacting the list-owner.

You can always contact the list owner by mailing to the ``owner'' address. For the list just send your message to Please state your problem and FORWARD any error message or a list message with your request. Since ezmlm can take care of virtually all request without human intervention, the list owner may read mail only infrequently. Please be patient and remember that in most cases you are asking the list owner to manually do what you could do yourself from your mail reader via ezmlm with the information in the error or list message.

© Copyright 1997, 1998, 1999 Fred Lindberg, & Fred B. Ringel,
This page was last built on 10/3/99; 1:25:40 PM on the MacOs

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