[Dovecot] "multiple quota roots" complains

[Kostik]

TS> OK, so two problems:
>> write(7, "From MAILER-DAEMON  Fri Oct 16 2"..., 168) = 168
>> pwrite64(7, "\nContent-Length: 0", 18, 4235) = 18

TS> It's writing a zero byte mail. Was the incoming mail really zero bytes,
TS> or is there something that truncates it?

No, it's not a problem. This is a really zero bytes message:
$ echo "123123123" |  strace /usr/local/libexec/dovecot/deliver -d koc

>> fstat64(7, {st_mode=S_IFREG|0600, st_size=4255, ...}) = 0
>> fdatasync(7)                            = 0
>> write(7, "\n", 1)                       = 1

TS> write() happened after fdatasync(), that causes this to fail:

>> close(7)                                = -1 EDQUOT (Disk quota exceeded)

TS> So this later problem should be fixed by:
TS> http://hg.dovecot.org/dovecot-1.2/rev/b5e6de777e52

Yabba-Dabba Do! :)
Yes, this patch solves the problem: "rejected: Not enough disk space".
And inbox is rollbacked now.

Timo, many thanks for all your help!

=kostik