Duplicate Messages

On a discussion list, people will sometimes send the same message several times to a mailing list.

Also, people will sometimes put an automated program on their email address, which answers each message it receives with a standard document. If that document should make it through to the mailing list, the second time that document is posted, ListManager will detect it as a duplicate posting because it is identical to the previously sent message.

This is known as a "duplicate message posting", and by default, ListManager is set to reject duplicate postings within a 2 day time period.

ListManager checks the entire message to see if it is a duplicate.

Note: Duplicate messages are counted on a per-member basis: if two different people send the same message, it is not seen as a duplicate.

See Utilities: List Settings: Discussion Group Features: Message Rejection Rules: Same Message Rules.