CRM-15934: more spam patterns

CRM-15934: more spam patterns

for reponses:
5.7.0 Local Policy Violation
5.7.1 Message rejected as spam by Content Filtering.
Client host [IP] blocked using
automatic messages are not accepted by this group
automatically-generated messages are not accepted by this group
550 Denied by policy
Our system has detected that this message
     550-5.7.1 is likely unsolicited mail
End-of-data rejected: Blocked - Your IP [IP] has no corresponding reverse (PTR) address
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