Potential fake E-Mail or Spam Mail Relay
The envelope sender may not be the same as the "From:" line in the message itself; it can be used by a mail server to prevent the message from being sent. And, of course, there's nothing to prevent the sender from using an address that doesn't exist, or that the sender doesn't own.
NEVER trust a spammer
NEVER buy from spammers (HIGH fraud risks)
NEVER visit spammed web sites (HIGH malware risks)
Spam filters added
if from contains ".com.br" mark as spam
if body contains ".com.br" mark as spam
the spammers have poisoned the .com.br domain so 100% of this is now treated as spam
*.com.br added to firewall as spammed domains are high risk for malware and there is nothing in this block that can not be found from people who do not spam.