I've looked over the smtp-auth link you sent, but am confused about the base64 part. Would you call the base64 tool after qmail-popup (or qmail-smtpd), but before vchkpw? And have you tested this?
The base64 tool is just useful for manually testing the AUTH LOGIN method.
Running `echo -n "[EMAIL PROTECTED]" | base64 -e` gives you "cG9zdG1hc3RlckB0ZXN0LmNvbQ==", the base64 encoded text to send to the server.
-- Tom Collins - [EMAIL PROTECTED] QmailAdmin: http://qmailadmin.sf.net/ Vpopmail: http://vpopmail.sf.net/ Info on the Sniffter handheld Network Tester: http://sniffter.com/