hehehe.. you're going to laugh and I hate this reply:
I can't get it to work. Period. I tried doing Postfix + SASL docs from the internet and I've just hosed it completely. On top of that, I wouldn't even know how to or where to point it for authenticating against teh MySQL db for OE.
I don't want to mess around much with fixing the broken install, I would rather just blow it out and start from scratch. Is there a way to have authenticated SMTP incoming for clients in OE that is quick and relatively straightforward to implement? If so, is there a doc to do so?