# List Parameters

If you are not already there, select List Administration from the Administrative Account Options. Then click on a list name to display the parameters for the list. This page allows you set and modify the parameters for the selected list-server mailing list. Using this page, you can also add, modify, delete or search for user's e-mail addresses in your list.

Note: The list of addresses is automatically updated by the list server: when a user subscribes to the list, their e-mail address is added; when a user unsubscribes, their e-mail address is deleted.

## List Files

- Click the Help.txt button to view or edit the help text that is sent to anyone who requests help or sends an invalid command to the list.

- Click the Subscrib.txt button to view or edit the confirmation text that will be sent to each person who submits a successful subscribe request to the list.

## List Options

Select the following security options which are located under List Options, then click Set List Options.

- Anyone can post. Allows anyone to post mail to the list. This is the default selection.

- Only Subscribers can post. Allows only subscribers to post mail to the list.

- Only Moderator can post. Allows only the list owner to post mail to the list. This option is used when you want the list owner to review all messages before they are posted to the list.

Optional List Options

- Reply to List. Make replies (from subscribers) go to the list, rather than the sender.

- Disable List Command. A user can obtain a list of the users subscribed to a list by addressing a message to the list server (for example, imailsrv@domain.com) and issuing the list listname command in the body of the message. Select this option if you do not want users to receive a list of the subscribers to your list-server mailing list. If the list is set to Only Subscribers can post or Only Moderated can post, subscribers can still send the Help or List command to obtain a list of subscribers.

- Disable Subscriptions (Private List). When selected, a Subscribe request will be rejected. The List Administrator must add new users manually (see Step 5).

- Enable Digest Mode. Groups the messages sent to this list into a digest, then sends the digest periodically. See Digest Options for more information.

- Enable Posters List. Enables the e-mail addresses that are listed in the poster's list. For information on how this setting interacts with the different types of lists, see Enable Posters List.

- Enable Subject Modification. To prepend a text string to the subject line of every message sent to the list. For example, if you enter [Discussion List] as the prepended text, a message with the subject, Parrot, will appear on the list server with the subject line: Subject: re:[Discussion List] Parrot. The default text is the name of this list.

- Enable Password. When this option is selected, users attempting to post to the list must enter a password in the "Subject" field. The password must be enclosed in brackets and colons as shown in the following example: [:password:]. For information on how this setting interacts with the different types of lists, see Enable a Password for Lists.

- Enable Header. Displays a text message at the beginning of every message sent to the list. Click Header.txt to view or edit the text message.

- Enable Trailer. Displays a text message at the beginning of every message sent to the list. Click Trailer.txt to view or edit the text message.

- Allow Unsubscribe based on subject line. When a user wants to unsubscribe from the list-server mailing list, most list servers expect the Unsubscribe command to be specified in the body of mail message. If you want the list-server mailing list to also accept an Unsubscribe command specified in the Subject line of the message, select this option. When selected, the list-server mailing list will accept the following commands in the Subject line to unsubscribe: unsubscribe, remove, signoff.

- Maximum message size. Enter the maximum message size allowed, in bytes, of a message that can be sent to this list. Enter 0 if you want the size to be unlimited.

- Number of Recipients per Message. You must calculate this number; it determines the number of recipients each SMTP process will send to. If you expect under 2000 users subscribing to the list, enter 25. If you expect over 2000 users subscribing to the list, divide the expected number of subscribers by 25, and enter the result as the Number of recipients per message.

## Related Topics

List Administration

Add a List Rule