On Thursday 31 August 2006 06:57, Karl-Heinz Schulz wrote: > Thank you for your help!! > > I'm almost there but I have now a Postfix relaying issues. ... > What is the best practice for mobile users? For this you need to use SASL. If you are new to Postfix, I strongly recommend "The Book of Postfix". Everything you need is well explained there. Scott K