[UC] Undelivered Mail Returned to Sender

Mail Delivery System MAILER-DAEMON at mazatl.ier.unam.mx
Thu Aug 1 05:08:26 CDT 2013


This is the mail system at host mazatl.ier.unam.mx.

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

<kcedano at morelos.unam.mx>: host nash.ibt.unam.mx[132.248.32.32] said: 550
    cuda_nsu 5.1.1 <kcedano at morelos.unam.mx>... User unknown (in reply to RCPT
    TO command)
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