Subject: Warning: could not send message for past 4 hours

From: Mail Delivery Subsystem <[email-masked]>
Date: Wed, 27 Aug 2008 14:58:09 +0400 (MSD)

**********************************************
    **      THIS IS A WARNING MESSAGE ONLY      **
    **  YOU DO NOT NEED TO RESEND YOUR MESSAGE  **
    **********************************************

The original message was received at Wed, 27 Aug 2008 09:57:33 +0400 (MSD)
from nat1.btcom.kz [89.107.96.12] (may be forged)

   ----- Transcript of session follows -----
... while talking to local:
>>> DATA
<<< 450 4.2.0 /var/mail/virtuser_1005: Disc quota exceeded
\virtuser_1005... Deferred: 450 4.2.0 /var/mail/virtuser_1005: Disc quota exceeded
Warning: message still undelivered after 4 hours
Will keep trying until message is 5 days old