Diputados federales sin direccion de correo electronico

Lei una nota en El Universal.com.mx y me decidi a mandarle un correo electronico al diputado Cuauhtémoc Sandoval del PRD, al enviarlo, me encuentro con la siguiente sorpresa:

[terminal]
Mail Delivery System
<mailer-daemon@mail.congreso.gob.mx> to me
More options 5:27 pm (5 minutes ago)
This is the Postfix program at host mail.congreso.gob.mx.

I’m sorry to have to inform you that the message returned
below could not be delivered to one or more destinations.

For further assistance, please send mail to

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

The Postfix program

<cuahutemoc.sandoval@congreso.gob.mx>: host localhost[127.0.0.1] said: 550
5.1.1 unknown or illegal alias: cuahutemoc.sandoval@congreso.gob.mx (in
reply to RCPT TO command)

Final-Recipient: rfc822; cuahutemoc.sandoval@congreso.gob.mx
Action: failed
Status: 5.0.0
Diagnostic-Code: X-Postfix; host localhost[127.0.0.1] said: 550 5.1.1 unknown
or illegal alias: cuahutemoc.sandoval@congreso.gob.mx (in reply to RCPT TO
command)
[/terminal]

Opiniones?