I played around with packet filter rules and DNAT rules to no avail. The absolute only things in the POP3 Proxy log are a bunch of MySQL and CFFD errors:
sys="SecureMail" sub="pop3" name="Error" info="communication error with cffd" message="basic_ios::clear"
2008:04:16-13:46:50 (none) pop3proxy[4152]: id="1117" severity="error" sys="SecureMail" sub="pop3" name="Error" info="communication error with cffd" message="basic_ios::clear"
2008:04:16-13:51:09 (none) pop3proxy[4125]: id="1117" severity="error" sys="SecureMail" sub="pop3" name="Error" info="communication error with cffd" message="basic_ios::clear"
2008:04:16-13:51:09 (none) pop3proxy[4125]: id="1117" severity="error" sys="SecureMail" sub="pop3" name="Error" info="communication error with cffd" message="basic_ios::clear"
2008:04:16-13:54:23 (none) cffd[4796]: id="1117" severity="error" sys="SecureMail" sub="pop3" name="Error" info="Error while scanning a message in database" error="MySql connection failed"
2008:04:16-14:00:22 (none) pop3proxy[4961]: id="1117" severity="error" sys="SecureMail" sub="pop3" name="Error" info="communication error with cffd" message="basic_ios::clear"
2008:04:16-14:00:22 (none) pop3proxy[4961]: id="1117" severity="error" sys="SecureMail" sub="pop3" name="Error" info="communication error with cffd" message="basic_ios::clear"
2008:04:16-14:01:34 (none) pop3proxy[5697]: id="1117" severity="error" sys="SecureMail" sub="pop3" name="Error" info="communication error with cffd" message="basic_ios::clear"
2008:04:16-14:01:34 (none) pop3proxy[5697]: id="1117" severity="error" sys="SecureMail" sub="pop3" name="Error" info="communication error with cffd" message="basic_ios::clear"
Note that the time stamps on those errors are from about the time that I initially set up the box and that there is nothing in the log to reflect activity for the several hours after that in which I was trying to get this working again. The only other references to POP3 in any of the logs that I could find were some DROP entries in the packet filter log that I managed to clear up by adding a PF rule.
I can't receive mail whether the POP3 proxy is on or off. Doesn't make a bit of difference. Clearly I'm overlooking something. But it kind of hacks me off that restoring a previously working configuration didn't just get everything working.
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