Error: Corrupted index cache file and Error: Maildir filename has wrong S value

[Brent Clark]

Good day Guys

We came across https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=661008

maildir_broken_filename_sizes = yes

We tried and all worked.

A question, is this a setting that one would enable in a production 
environment?

Regards
Brent

On 2019/11/11 16:17, Brent Clark wrote:
> Good day Guys
> 
> I forgot to add and mention a very important piece of the puzzle.
> 
> We are making use of dovecots compression plugin.
> 
> I.e. https://doc.dovecot.org/configuration_manual/zlib_plugin/#compression
> 
> Regards
> Brent Clark
> 
> On 2019/11/11 14:49, Brent Clark wrote:
>> Good day Aki
>>
>> Thanks ever so much for replying.
>>
>> Interesting that you ask the version of dovecot. Any specific reason, 
>> this question.?
>>
>> To answer your question.
>> dovecot-core 1:2.2.27-3+deb9u5
>>
>> Regards
>> Brent
>>
>> On 2019/11/11 12:27, Aki Tuomi wrote:
>>> What version are you running?
>>>
>>> Aki
>>>
>>> On 11.11.2019 12.26, Brent Clark via dovecot wrote:
>>>> Good day Guys
>>>>
>>>> Just an update, my colleague and I came across this script.
>>>>
>>>> https://www.dovecot.org/tools/maildir-size-fix.pl
>>>>
>>>> We made a backup, ran it, but unfortunately the problem still persists.
>>>>
>>>> Regards
>>>> Brent
>>>>
>>>> On 2019/11/11 11:42, Brent Clark wrote:
>>>>> Good day Guys
>>>>>
>>>>> I have been met with a very interesting set of error messages.
>>>>>
>>>>> Here is the snippet(s)
>>>>> https://pastebin.com/raw/nFf79Ebc
>>>>>
>>>>> (Sorry for all the redacted REMOVED_*.)
>>>>>
>>>>> Google is proving to be a bit challenging in helping and explaining.
>>>>>
>>>>> Could anyone please share how something like this happens, but more
>>>>> importantly how to recover from this.
>>>>> doveadm index -u <username> INBOX do the trick?
>>>>>
>>>>>
>>>>> I also would like to ask the community, is there any tips or tricks
>>>>> any of you guys do to mitigate index / cache corruptions.
>>>>>
>>>>> Many thanks
>>>>> Regards
>>>>> Brent Clark