Comment 3 for bug 1859011

Thanks for the hint to the dumpdb command.

though the command was killed by the system, it extracted sufficient data,
and I was able to extract some useful informations.
I did split the output into files for each object (csplit '/^<----- start object/' '{*}')

1. one bounced mail (qid F2BEEE9318) was multiple times in the bonce-event-13392.pck

2. the dumped objects for the duplicated bounce differ only in the 1st and 3rd line,
   first line beeing '<----- start object' and second line been the mailinglist

3. I guess the detected mail-address should be in the third line. For the first
   instance of the duplicated mail this was '\x00', for the other objects it
   seems to contain "random" data e.g.

   '\x00',
   '\x16\xc9\xeaNq\xf8\xfbU\xe9\xa6\xbd\xbc\x92\x19\xaf\xee.o.\xa3M\x82i\x98g\xaep=\xb3\\\x94S_[\x01',
   'y\x9d\xf5O\x88\x05O\x88\x05O\xb0r/+\xbfQ\xd4<\xb2\xd7\xd2\xec\xf7E\xda\x1f\x86\xa7e\xb0\xa7e\xb0\xa52\xd8\xd3\xf6\xe6\x16{s\x8b\x0c\xb6\xd4\xfe|\xd4\xfe\xdcb\x7f',
   "\x87\xe5\xc7\xe3\xaa\xd2\xc5\xff\x8f\xb6\xbe\x15\xe2\x9b\xb8b\x8a\xa0\x842\xa8\x87\t0\xe5a\xd0\xb1\x9bqY\x1d\xc6\x9e\xddYY\x19\x93\xa7|\x14\x83\x02\xd8\xd9\xb3\x10\x83\xe6\xbb\xd9\x1f'\x13tVk\xb9\xb3Dq\x85\xd8`\xaa-W^!L\x81\xf2\xdew\xde~\x1a\x1f\xcf\xc7\x96\xf9\x9eg\xbe\xb7{^\xe91\xf6",

4. The envelope-from of the bounce mail did contain '=' 2 times
   <email address hidden> while the from address is
   <email address hidden>

5. the bounced mail included the complete original mail with pdf attachment ~5 MB

There is no change in my BounceRunner.py compared to the linked version.