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Drop Inbound SMTP connections from Specified countries

Using the rule below i see unexpected behavior in the logs. The log excerpt shows three connections. Each of these connections is from a country that is blocked.  The rule seems to block all other protocols from blocked countries except SMTP. It allows a lot of SMTP traffic that it should not. The three entries are from Argentina, Japan, and China. The mouse over is from the email that originated in China.

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