[Dovecot] quota-warning.sh mail from

[Proskurin Kirill]

Hello all

How Dovecot 1.1.3 quota script understand to who send a mail?

In try to do this:

In conf:
quota_warning = storage=80%% /usr/local/bin/quota-warning.sh 80 %u@%d

In logs:
IQuota warning: bytes=168611020 (80%) messages=0 (0%) 
command=/usr/local/bin/quota-warning.sh 80 dump-capability@

*what is dump-capability@ ? OS related user?...*

#cat quota-warning.sh

#!/bin/sh

PERCENT=$1
TO=$2

echo "Your mailbox is $PERCENT% full. If it overfill - you will can not 
get new email. Please clean up your mailbox.

--
Mail Administator" | /usr/bin/mail -s "Email mailbox is $PERCENT% full" 
  $TO -f postmaster at domain.off

exit 0
---

Im thinking in wrong way?

-- 
Best regards,
Proskurin Kirill