[GitHub] [incubator-ponymail] sbp commented on pull request #517: Add DKIM style ID generation

[GitBox <gi...@apache.org>]

sbp commented on pull request #517:
URL: https://github.com/apache/incubator-ponymail/pull/517#issuecomment-702772743


   It does not suffice to "[use a best guess as to the original LID that was used](https://github.com/apache/incubator-ponymail/pull/517#issuecomment-693372710)" to reconstruct an **OL** permalink. If somebody has an `opaque_lid` permalink, and the message is lost but the Ponymail operator guesses an incorrect new lid, then the original `opaque_lid` link will break. If links break then they cannot be considered permalinks.
   
   Moreover, if the appended lid in **OL** were not an integral part of the permalink then it would be necessary to use it anyway to disambiguate which list UI to apply to a message in the archives. This is because, for example and amongst other possible scenarios, the [same message could be imported twice](https://github.com/apache/incubator-ponymail/pull/517#issuecomment-692033864) with different manual command line lid overrides. Using lid UI disambiguation has [already been proposed](https://github.com/apache/incubator-ponymail/pull/517#issuecomment-693372710), and requires [handling of the case](https://github.com/apache/incubator-ponymail/pull/517#issuecomment-691953754) where the lid is omitted from the link.
   
   One could consider that the current commit dfd18eb already implements **OL** in the presence of lid UI disambiguation. It is therefore not an accurate characterisation that the current commit "[will need to be fixed](https://github.com/apache/incubator-ponymail/pull/517#issuecomment-693372710)" to include the lid in the input, because the intention was that lid UI disambiguation would be introduced alongside the current commit, or implemented in a future version with a warning to users in the documentation meanwhile.
   


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