Bug#403071: mozilla messes up mailbox, loss of mails

Caspar Bothmer caspar-debian at cbothmer.org
Sun Jun 3 15:35:41 UTC 2007


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Caspar Bothmer wrote:
| Hendrik-Jan Heins wrote:
| | But I can't reproduce the problem you had.
|
| I am not surprised.  Still I have a mailbox whose very first mail got
| partially overwritten by another mail.

I just found a copy of the original mail.  It looks as if the first 2858
bytes of the original mail were overwritten by the spam mail.  This
includes the preceding "From - [timestamp]" line.  The spam mail was
from Nov 19, 2006, but the oldest mails are from Feb 20, 2006 (the
second and third mail were from the same person who also sent me the
mail, which was later overwritten).  These are the timestamp lines of
the first three mails in the corrupted mailbox file.

~From - Sun Nov 19 17:02:10 2006
~From - Mon Feb 20 22:09:03 2006
~From - Mon Feb 20 22:09:03 2006

So for me it looks like that:
- - The first fulltext search gives me a set of mails out of several
mailbox files, which I delete from their respective mailbox files.
- - My second fulltext search gives me a new set of mails, of which the
first match gets written to a mailbox file, corrupting the first mail in
this mailbox.

By writing these lines I ask myself what happens if I delete some mails
from huge mailbox files and while these get rearranged and therefore
rewritten in the background, start a new operation on exactly these
mailboxes, including those being written that moment.  The corrupted
mailbox was something around 30 MB of size and it wasn't the only huge
mailbox file to be changed.


caspar
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