Solved! I caused the cause of the problem with misconfigured DNS.
I had a secondary MX defined in DNS for elven.com.au that is not yet configured to receive for elven.com.au. I tested again from work, and got this error: ----- The following addresses had permanent fatal errors ----- [email protected] (reason: 550 relay not permitted) ----- Transcript of session follows ----- ... while talking to mx.bincrow.net.: >>> DATA <<< 451 Temporary failure, please try again later. ... while talking to smtp.free2air.net.: >>> DATA <<< 550 relay not permitted 550 5.1.1 [email protected]... User unknown <<< 503 valid RCPT command must precede DATA First attempt goes to the primary MX, mx.bincrow.net (where I have spamd running). Gets the 451, then retries on the secondary MX, gets 550 user unknown, then gives up (I verified this by watching the spamdb output and the counter in tuples of problem emails stayed at 1) I have removed the secondary MX from the DNS for elven.com.au then lists.openbsd.org did the expected retries and became whitelisted.
