GitHub user sebbASF opened an issue:
https://github.com/apache/incubator-ponymail/issues/398
Enh: redundant ids are not sufficiently unique
The redundant ID generator is documented as not guaranteeing unique ids.
It currently includes (if present):
Body
List Id
Date
Sender
Subject
Attachment hashes
Whilst these are unlikely to generate duplicates, it's not impossible: for
example the same (undated) message could be sent multiple times to the same
list.
I'm not sure why Message-ID is not included in the list of fields, as it's
designed for such usage.
It should be included in the hash (if present).
Note: since the redundant generator is new since 0.9, it has yet to be
included in a release.
So it's possible to change the algorithm without causing problems.
If there are any other invariant fields that warrant inclusion this should
also be done now.
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