> Yes, but that will block possibly valid mail. Of course I don't accept > mail with non-ASCII RCPT TO addresses because Cyrus doesn't allow it, but > I should accept non-ASCII MAIL FROM addresses if they are valid. But Cyrus > also refuses them. That's the real problem. Can you turn off the 8BITMIME extension that postfix advertises? It seems from the RFC (http://tools.ietf.org/html/rfc4952), if 8BITMIME isn't advertised, then it's up to the sending side to downgrade the SMTP transaction to ASCII, and then you could block non-ASCII MAIL FROM addresses... Rob ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html