zlib plugin doesn't add "Z" flag to Maildir filename

[Alessio Cecchi]

Il 10/03/2016 15:33, Tom Sommer ha scritto:
> On 2016-03-10 15:00, Alessio Cecchi wrote:
>> Il 10/03/2016 10:38, Tom Sommer ha scritto:
>>> I enabled zlib compression, so new mails are saved compressed.
>>>
>>> Now I want to convert the old mails to gzip with the find and gzip
>>> command, but now I don't know which files are already gzip compressed by
>>> dovecot.
>>
>> Simple check if the file is already compress (es. if gzip -t
>> "${MAILFILE}" 2> /dev/null".
>
> Thanks. I worked around it with `file`.

I suggest to use "gzip -t" for test if an email is already compress, 
with file I found some unrecognized compress email, a real example:

# file 1424615175.M471013P18835.pop04.domain.com\,S\=3982\,W\=4097\:2\,S
1424615175.M471013P18835.pop04.domain.com,S=3982,W=4097:2,S: Minix 
filesystem, V3, 6762 zones

# gzip -t 1424615175.M471013P18835.pop04.domain.com\,S\=3982\,W\=4097\:2\,S
# echo $?
0

-- 
Alessio Cecchi
Postmaster @ http://www.qboxmail.it
https://www.linkedin.com/in/alessice