[Dshield] modify hosts in a internet email server

Isaac suscripcions at tsolucio.com
Wed Jun 8 20:46:11 GMT 2005

When some server or firewalls without a internet domain send emails to 
our mail server, it rejects because the domain doesn't exists.
So I changed the hosts to add a line for the domain like:
500.200.3.1 unkwon-domain
How my server never should send emails to this machines, don't need a 
real ip.
You think it should be a problem from the point of view of security or 

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