Previous 1 2 3 4 Next 394 Replies Latest reply: Dec 16, 2014 2:41 PM by iQuad Go to original post
  • SKEL_73 Level 2 Level 2 (235 points)
    Yes they are POP accounts, and yes they leave messages on the server for other devises to pick up.
  • Ernie Stamper Level 8 Level 8 (37,525 points)
    Russcus,

    An Exchange account, unless POP, would not impact or be impacted by the MessageUidsAlreadyDownloaded3 file.

    Ernie
  • Rgbyhkr Level 2 Level 2 (400 points)
    Hey Ernie,

    I'm having the same problem. Twice now I have deleted these mass dupes (over 2700) that Mail re-downloaded from my POP Yahoo! account only to see them return. At this point I'm curious to see if they get downloaded again if I do not delete the dupes. From what others have said, it appears that they may in fact get downloaded again.

    I checked my MessageUidsAlreadyDownloaded3 file and it's last update was after the most recent mass download. Assumingly then, it is being updated, but perhaps incorrectly. I may try doing as you suggest and deleting the file to allow it to be rebuilt.

    Question though - my goal is to retain the copies of these messages that were already in my mail library. I want to retain the reply, forward, flagged, etc indicators that some of the messages have been tagged with from normal mail management. So, I don't really have use for the newly downloaded copies assuming it will only happen once more if this procedure does indeed fix the problem. If I delete the file, relaunch mail and get another mass download, should I be able to delete these new dupes without having that action set off another download (assuming the file recreation fixes the problem)? My thinking is that it should be ok as I would guess that the MessageUidsAlreadyDownloaded3 file doesn't force a re-download of messages just because you have permanently deleted them locally - under normal operation of course. Is this accurate?

    Thanks.

    Jeff

    Message was edited by: Rgbyhkr
  • Ernie Stamper Level 8 Level 8 (37,525 points)
    You have guessed correctly, in my experience. The only thing that could impact that, would be if you had the selection in Mail Preferences/Accounts/Advanced to remove from server when removed from the Inbox -- it seems you would not have that selection, so should not impact.

    Ernie
  • SKEL_73 Level 2 Level 2 (235 points)
    Mail is officially out of control - I just watched it download 3240 messages, each the 7th duplicate, and then do it again for the 8th set, a minute later.....
  • Ernie Stamper Level 8 Level 8 (37,525 points)
    Did you try forcing Mail to freshen the MessageUidsAlreadyDownloaded3 file?

    Btw, I have not experienced this on any of my POP nor IMAP accounts.

    Ernie
  • SKEL_73 Level 2 Level 2 (235 points)
    this suggestion seems to have worked for me for the time being...... thank you Ernie.
  • Rgbyhkr Level 2 Level 2 (400 points)
    Thanks as well Ernie. I am trying the suggesting and the new download is proceeding. This will hopefully be the last one. Just for testing purposes, I will not delete the dupes for awhile - just to see if another download gets triggered. Later on tonight, if all is well, I will do the deletions and see if things stay fixed. I’ll report back.

    Thanks!

    Jeff
  • Peter Monahan Level 1 Level 1 (45 points)
    This ONLY happens with POP accounts where there are multiple mail clients checking the same POP account.

    Ernie's suggestion is a good one, but the problem will manifest itself again when two (or more) mail clients collide while retrieving POP mail.

    It does not happen with Exchange or IMAP accounts.

    You can report the problem here:

    http://www.apple.com/feedback/macosx.html

    Peter
  • Ernie Stamper Level 8 Level 8 (37,525 points)
    Peter,

    How frequently do you have these different email clients checking for New Mail on these same POP accounts? This is probably a great observation, but I have not had a chance to see this, even though I had another computer checking my accounts during certain periods of testing with Mail 4.0.

    Ernie
  • SKEL_73 Level 2 Level 2 (235 points)
    Does anyone know if there is a way to 'select all unread' to that I can easily get rid of these thousands of duplicates with out manually sorting?
  • Peter Monahan Level 1 Level 1 (45 points)
    Ernie,

    One machine is set to 1 minute, the other is set to 5 minutes. If I shut down one client (say for 24 hours) there are no duplicates. If I have two clients running, it is virtually a guaranteed event.

    It does not happen with my IMAP accounts.

    Peter
  • Ernie Stamper Level 8 Level 8 (37,525 points)
    Peter,

    It would not happen with IMAP accounts, but IMAP accounts could impact how long the client needs to finish checking. With multiple accounts, I would never suggest anything shorter than 5 minutes.

    I repeat: this is a great observation! I think you need to test with other intervals before a good bug report (if it is a bug) could be filed. Also, specific mail servers may be more prone to let this corruption happen.

    Ernie
  • Peter Monahan Level 1 Level 1 (45 points)
    Ernie,

    I have already tested with various intervals and the bug is reproducible. It only occurs with Snow Leopard Mail Clients (v4.0). Does not happen with Leopard.

    I have already reported to Apple.

    Peter
  • Ernie Stamper Level 8 Level 8 (37,525 points)
    Peter,

    Are you saying that both, conflicting clients must be Mail 4.0?

    Still may differ depending upon providers.

    Ernie

    Message was edited by: Ernie Stamper
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