Undelivered Mail Returned to Sender

[Mail Delivery System]

This is the mail system at host mailserver.ins.gob.pe.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<spam at ins.gob.pe>: permission denied. Command output: maildrop: maildir over
    quota.
-------------- next part --------------
An embedded message was scrubbed...
From: <pkg-exim4-maintainers at lists.alioth.debian.org>
Subject: ???e?e? g?? ?a? ?? ???? ??????e? ?a?y g????x ?o?e????????x k??e??o? ??? ?a???o ????eca Bc? ko??a??? ???p????? Email:prodawez at mixmail.com ?e?:+79I?79?6??2 Skype:s....8 ICQ:6288862 ??o?? ????c???c? ?? pa?????? ?p?????? delete
Date: Thu, 19 Jul 2012 00:29:34 -0500 (PET)
Size: 2096
URL: <http://lists.alioth.debian.org/pipermail/pkg-exim4-maintainers/attachments/20120719/aaddfb79/attachment.mht>