Warning: could not send message for past 4 hours

[Mail Delivery Subsystem]

    **********************************************
    **      THIS IS A WARNING MESSAGE ONLY      **
    **  YOU DO NOT NEED TO RESEND YOUR MESSAGE  **
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The original message was received at Thu, 3 Jul 2003 00:58:00 -0700 (PDT)
from address@hidden [15.1.28.240]

   ----- The following addresses had transient non-fatal errors -----
<address@hidden>

   ----- Transcript of session follows -----
mail: cannot append to /var/mail/ovidiu
mail: cannot create dead.letter
451 I/O error
Warning: message still undelivered after 4 hours
Will keep trying until message is 3 days old

Reporting-MTA: dns; rgv01.rgv.hp.com
Arrival-Date: Thu, 3 Jul 2003 00:58:00 -0700 (PDT)

Final-Recipient: RFC822; <ovidiu@rgv01.rgv.hp.com>
Action: delayed
Status: 4.5.0
Last-Attempt-Date: Thu, 3 Jul 2003 05:14:59 -0700 (PDT)
Will-Retry-Until: Sun, 6 Jul 2003 00:58:00 -0700 (PDT)

--- Begin Message --- Subject: Re: Application Date: Fri, 4 Jul 2003 9:56:50 +0200

Please see the attached zip file for details.

"your_details.zip
Description: Zip compressed data

--- End Message ---