On Sun, 2003-09-28 at 05:13, Harald Meland wrote:
[Barry Warsaw]
I really really want to use something like message-ids to generate message file names. I want to be able to generate links to archived messages in the footers, but I think the best way to do that is to agree on a reproducible, independent algorithm for calculating them.
What input parameters should such an algorithm have? I take it that you want to use just
- list name and
- message-id
Exactly.
- Whenever Mailman receives a message whose message-id is already present in the archives, the original Message-Id: header is renamed to e.g. X-Original-Message-Id:, and Mailman generates a fresh (as in "not yet present in the archives") message-id before the message is either archived or sent to the list members.
This is what I was thinking about. Alternatively we could rewrite all message-id headers when we accept the message. That would guarantee uniqueness but it would break the correlation of message-ids between list copies and direct copies. Is that bad? (note that we already do this for NNTP posted messages, and there has been some off-list discussion about that).
-Barry