Our IP 213.133.106.116 ist listed on backscatterer.org at the moment.
We 've checked our server and the "mailbox is full" bounce is the one
and only bounce our server is sending. This is allowed by us, because
such messages are necessary and seldom, because full mailboxes are in
daily mailtraffic seldom. This can not be abused for backscattering.
Please be so kind and explain us, why such a message nevertheless
causes an entry. We think, uceprotect work in this case not correct.

What is your opinion about ?

Below the snippet from our smtplog:

....de> R=vmail_user T=vmail_delivery defer (-22): mailbox is full
(MTA-imposed quota ex ceeded while writing to tmp/.....

Kind regards

Bernd Kaiser