[MlMt] giving up - MailMate crash - won't synchronize

[Helen Holzgrafe]

Hi Benny,

I no longer have the offending files. Once I got them all imported 
(which did take nearly 3 weeks), I deleted the originals.  They were 
.mbox files in a POP mail account on my personal mail server, not an 
outside service, and I was using Postbox. These files had been around 
for many years and were originally in Eudora.

.mbox files do some checksums on the size of each message as well as 
having special lines that delimit the individual messages.

As I corrected these files I found that some were missing the delimiting 
lines, some were missing bits of the message thus making the checksums 
come out wrong.

In all cases, it was clear the files were old enough to have had some 
bit rot, and had been through at least one minor disk failure that 
likely removed parts of the file when disk blocks were lost. One message 
clearly had its header mixed inside its actual message.  One was missing 
8 bytes and messed up its checksum as a result.

So, my best help for you is to have you get (or create) some .mbox files 
somehow and then mess them up in these sorts of ways and then try to 
import them and see what happens.  I suspect that you might be able to 
get Mailmate to at least detect these kinds of corrupt files and react a 
bit better than it does now (i.e. give an error message rather than hang 
indefinitely).

Good luck,

-Helen

On 15 May 2015, at 4:13, Benny Kjær Nielsen wrote:

> On 14 May 2015, at 18:57, Helen Holzgrafe wrote:
>
>> Perhaps it would be good if Mailmate could do better 
>> detecting/handling corrupt import files.
>
> You are welcome to send me an example file off list. I'm not sure 
> exactly what happens here, but it does sound like MailMate could 
> handle it better.
>
> -- 
> Benny
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> mailmate at lists.freron.com
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