[UC] Undelivered Mail Returned to Sender

[Mail Delivery System]

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

I'm sorry to have to inform you that your message could not
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For further assistance, please send mail to postmaster.

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                   The mail system

<jrvargas at licifug.ugto.mx>: host ASPMX.L.GOOGLE.COM[173.194.64.27] said:
    550-5.1.1 The email account that you tried to reach does not exist. Please
    try 550-5.1.1 double-checking the recipient's email address for typos or
    550-5.1.1 unnecessary spaces. Learn more at 550 5.1.1
    http://support.google.com/mail/bin/answer.py?answer=6596 qh3si1109717obc.95
    - gsmtp (in reply to RCPT TO command)
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