[Dovecot] Dovecot + Vpopmail quota issues

[qmail at top-consulting.net]

I've done it. Thank you list for letting me bounce my ideas off you :)

This stuff should be documented somewhere and save someone else a lot of work.

Here are the crucial steps you need to remember.

1. Namespace order is very important in the config file. Always keep  
your default namespace first since that's where the maildirsize file  
will be created

2. You have to define the quota rules for your main namespace which is  
usually defined like so:

namespace private {
   separator = .
   prefix =
   inbox = yes
}


To assign quota only to this namespace, you have to use this line:
quota = maildir:User Space:ns=

The important part is the "ns="

Usually something follows after the = sign but since our default  
namespace has no name we have to leave it empty. Took me a lot of  
trial & error to figure this out.




Quoting qmail at top-consulting.net:

> I made a bit of headway but not too much.
>
> I discovered that the order of the namespaces is very important.
>
> The reason why dovecot was updating the maildirsize file under  
> Archive was because the Archive namespace was defined first.
>
> I now define the root inbox first and Archive second and dovecot  
> properly updates the same maildirsize file as vpopmail in  
> domain.com/user/Maildir/maildirsize
>
> However, there are two key differences still:
>
> 1. Vpopmail does not calculate the storage under  
> domain.com/user/Maildir/Archive when it updates the maildirsize  
> file. This is exactly what I want. Vpopmail reports the proper size.
>
> 2. Dovecot DOES calculate the storage taken up by:  
> domain.com/user/Maildir/Archive  despite the fact that '/' is not my  
> default separator.
>
> I think vpopmail acts properly and calculates the file sizes in  
> properly formatted maildirs.
>
> For some reason dovecot does not .. or am I wrong ?
>
> I've tried many configs to get dovecot to ignore the Archive folder  
> but none of them works. The only thing that works is if I  
> specifically write the name of each folder in the quota ignore  
> definitions.
>
> If my structure is as follows:
>
> domain.com/user/Maildir/Archive/.Folder1/cur
> domain.com/user/Maildir/Archive/.Folder1/new
> domain.com/user/Maildir/Archive/.Folder1/tmp
>
> Folder1 is a proper maildir and Archive is a \NoSelect folder.
>
> I want dovecot quota to ignore ALL the possible folders under  
> Archive without mentioning them one by one.
>
> This works for example:
>
> quota = maildir
> quota_rule = ?:storage=0
> quota_rule2 = Folder1:ignore
>
> This does not:
>
> quota = maildir
> quota_rule = ?:storage=0
> quota_rule2 = Archive:ignore
>
> How can I get dovecot to ignore the quota for all the possible  
> folders under Archive ?
>
>
>
>
>
>
>
>
> is different fr
> Quoting qmail at top-consulting.net:
>
>> I can't get dovecot to ignore a certain directory/namespace when  
>> calculating quotas.
>>
>>
>> I am running dovecot 1.2.16 with vpopmail configured for quotas.
>>
>> I use the dot (.) as my separator and my user structure is as follows:
>>
>> ../domain.com/user/Maildir  for all the user directories
>>
>> I also have for each user:
>>
>> ../domain.com/user/Maildir/Archive   which is a symlink to a NFS  
>> mounted partition that holds read-only archives
>>
>> In dovecot.conf I have defined them as follows:
>>
>>
>> mail_location = maildir:~/Maildir
>>
>> namespace private {
>>  separator = .
>>  prefix = ARCHIVE.
>>  inbox = no
>>  hidden = yes
>>  list = yes
>>  location = maildir:~/Maildir/Archive
>> }
>>
>> namespace private {
>>  separator = .
>>  prefix =
>>  inbox = yes
>> }
>>
>> This works very well, in as much as I see the Archive namespace and  
>> its folders.
>>
>> The problem arises in the fact that Dovecot insists on calculating  
>> the 'Archive' namespace/directory storage towards the total storage  
>> used.
>>
>> My Quota configuration is as follows:
>>
>> auth default {
>>  mechanisms = plain login digest-md5 cram-md5
>>
>>  passdb vpopmail {
>>    args = webmail=192.168.1.12
>>  }
>>
>>  userdb vpopmail {
>>    args = quota_template=quota_rule3=*:backend=%q
>>  }
>> ...
>> }
>>
>> plugin {
>> quota = maildir
>> quota_rule = ?:storage=0
>> quota_rule2 = Archive:ignore
>> quota_rule3 = ARCHIVE:ignore
>> }
>>
>> From what I've read, this is supposed to use the maildirsize file  
>> when available or otherwise return no quota. It worked just fine  
>> before this new Archive namespace.
>>
>> For a certain user, vpopmail writes the 'maildirsize' file in  
>> ../domain.com/user/Maildir/maildirsize and it contains the correct  
>> value ( without the /Archive directory ).
>>
>> The problem is that for some reason, something ( I suspect dovecot  
>> ) writes a new maildirsize file in  
>> ../domain.com/user/Maildir/Archive/maildirsize which also contains  
>> the size of Archive. Subsequently, Dovecot adds the two of them up  
>> and usually throws me over quota.
>>
>> To test, I have emptied the maildirsize file under Archive and  
>> changed its owner to root (perms are 755 ) so that nobody but root  
>> can write to it. Dovecot complained right away about it:
>>
>> Jul 19 12:55:21 pop1 dovecot: IMAP(user at domain.com):  
>> open(/home/vpopmail/domains/B/domain.com/user/Maildir/Archive/maildirsize)  
>> failed: Permission denied
>>
>> Despite passing the quota responsibility to vpopmail it seems that  
>> Dovecot still tries to update that file.
>>
>> And finally the question... How do I get dovecot to not calculate a  
>> quota for that directory/namespace ?
>>
>>
>>
>>
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