Hi, We run qmail 1.03. I've been asked if we support "ERTN". Reading around... it looks like I have to have serialmail installed to support it. However, I don't know how to find out if i have serialmail installed. Someone tells me that the person here before me had setup. Two quick questions: 1. How do I find out if I have serialmail installed? 2. If I do have serialmail installed, what is the difference between ERTN and people just dialing in and collecting their mail normally? Thanks for help in advance. :) Regards, Marc-Adrian Napoli Connect Infobahn Australia +61 2 92811750 [EMAIL PROTECTED]