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

[Brent Clark]

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