[Dovecot] Best way from Mbox to Maildir using 2.17?

[Noel Butler]

On 05/11/2013 17:30, SATOH Fumiyasu wrote:
> At Tue, 5 Nov 2013 08:10:46 +0100 (CET),
> Steffen Kaiser wrote:
>> >>>>> http://batleth.sapienti-sat.org/projects/mb2md/
>> >>
>> >> The program has at least 2 bugs in it:
>> >>
>> >> . If the body has paragraph break (i.e., '\n') followed by the RFC822
>> >>   keyword 'From', the original message will loose the last half of
>> >>   the message and a phantom message will be created.
>> >>
>> >>   Change from my notes:
>> >>
>> >> #           if ( /^From /
>> >> #     -to-
>> >> #           if ( /^From .*? \d\d:\d\d:\d\d \d\d\d\d/
>> >>
>> >> . I never could figure out where the second bug was. This one created
>> >>   some messages with blank subject lines.
>> 
>> You have a badly formatted mbox file, if there is such distinction 
>> neccessary:
> 
> No. There are some variants of mbox format.
> See https://en.wikipedia.org/wiki/Mbox#Family
> 

RFC 4155

o Each message in the mbox database MUST be immediately preceded
         by a single separator line, which MUST conform to the following
         syntax:

            The exact character sequence of "From";

            a single Space character (0x20);

            the email address of the message sender (as obtained from the
            message envelope or other authoritative source), conformant
            with the "addr-spec" syntax from RFC 2822;







>> http://manpages.ubuntu.com/manpages/precise/man5/mbox.5.html
>> 
>> " In  order  to  avoid misinterpretation of lines in message bodies 
>> which
>>   begin with the four characters "From", followed by a  space  
>> character,
>>   the  mail  delivery  agent  must quote any occurrence of "From " at 
>> the
>>   start of a body line.
>> "