This is how to configure a mailing list for announce only. Announce only means that only the list owner can post to the mailing list, and all subscribers will get the post from the list admin. There are several options for this type of setup, the basic steps are the same however:
Optional configuration settings:
[General options]
A. Prefix for subject line of list postings - This prepends the subject line of the email that is sent to list members with what you have defined in this setting.
B. Hide the sender of a message, replacing it with the list address (Removes From, Sender and Reply-To fields) - The reply address can be masked with the list address, or you can use the admin address. Most lists use the list address for announce only mode. Group mode can be setup for either method. Tight communities will often use the real sender address so list members can contact each other directly. Looser knit community lists might prefer to hide the sender address for spam concerns by list members who might harvest list member addresses.
C. Where are replies to list messages directed? Poster is recommended for announce only mailing lists. Use the "List" option for certain group-style lists. The list mode allows all members on the list, to post to the list, and all list members would receive the posts from any member, who posts.
D. Send monthly password reminders? Probably should be disabled for most lists.
E. Maximum length in kilobytes (KB) of a message body. Defaults to 40, 40 is a good number for announce only, text based lists. image intensive lists especially group lists that send lots of attachments, should be set higher.
F. Discard held messages older than this number of days. 0 is the default but can waste space. Set this to something like 120 for customers who you configure the list for.
G. Configure Sender filters (Privacy options -> Sender filters)
and set the following options:
- By default, should new list member postings be moderated? (set to yes if you want to manually approve each member posting to the list.
- Action to take when a moderated member posts to the list (set to reject if they are not allowed to post to the list. A moderated member is a list member who has been set to be moderated by the list admin.
- Action to take for postings from non-members for which no explicit action is defined (set to reject or hold. Reject deletes the email as it arrives, hold is used because often times in group mode, list members reply to the list from an external or secondary email address that is not in the mailman system. If this is set to hold status, the list admin receives an email advising him to login and tell the list what to do with the queued message that arrived from this address, and what to do with subsequent replies from this address. Typically a list admin set fro group mode wild use "hold" then the admin would select the accept option when prompted if the email was sent from a legit list user, or reject if sent from someone who is not desired as a list member.
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