[BlueOnyx:19988] Re: Dovecot Error

[Dirk Estenfeld]

Hello,

I also saw this dovecot error in the maillog today but in my case user quota was exceeded.
So I would recommend to check user quota and(!) group quota again. Maybe it is not a user quota problem but a group quota (quota -g site<nr>)

Yes if you delete mbox every mail which was in in the INBOX for the user is history.
So do the following before you delete the mbox file.
Install mutt (yum install mutt) and open the mbox in the shell with mutt -f <filename>
If mutt is showing the mails then the mbox file is not corrupted. If mutt shows something like "mbox is corrupt" the you can be sure it is.
If it is corrupt you can open with a textedit (for example vi) and you can check if the first line is not starting with "From ...." 
Example
>From root at localhost.localdomain  Tue Aug 16 06:00:04 2016

If this is not the case then you can delete the lines until the next "From ..." (for safety do  a copy of the mbox file first).

So my recommendation is: 
- check user and group quota
- check the mbox file with mutt
- check the file with vi (or any other texteditor)

Best regards,
Dirk


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blackpoint GmbH - Friedberger Straße 106 - 61118 Bad Vilbel

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-----Ursprüngliche Nachricht-----
Von: Blueonyx [mailto:blueonyx-bounces at mail.blueonyx.it] Im Auftrag von Michael Stauber
Gesendet: Mittwoch, 17. August 2016 08:44
An: BlueOnyx General Mailing List <blueonyx at mail.blueonyx.it>
Betreff: [BlueOnyx:19987] Re: Dovecot Error

Hi,

> Thanks Michael. But what happens with all mails when I delete the mbox file? Will they be deleted too?

Yes, that will delete all mails and the mbox file will get recreated
when the first new email comes in.

Like said: As is the mbox file appears to be corrupted, so it is of
dubious use. You could also just rename it and let the user download it
by FTP or similar. That way he could try his luck with it. It's just one
large textfile with one email after the other. It might perhaps be
possible to find the corruption and to fix it in a text editor. But this
is often not practical due to the very large size. If that mbox file is
larger than 2 GB simple text editors such as pico, nano or the one
included in Midnight Commander won't be able to handle it.

-- 
With best regards

Michael Stauber
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