Linux - ServerThis forum is for the discussion of Linux Software used in a server related context.
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
It is as simple as it says authentication fails. With the settings you mention the easiest way to check is to type saslfinger -c and it will tell you what to do. My guess is that you did not set up sasl properly or there is no authentication provided, in other words there is no passwd file to take your authentication data from.
Thanks for that. Somehow, I've managed to configure many postfix installs without coming across it.
That means you have never tried sending emails from other networks. Postfix will never allow you do so unless you are properly authenticated. I travel a lot and connect from different networks (even within my city limits' various wifis for example) therefore I can send my email from any IP addresses and absolutely any machines and networks in the world. My silly ISP which happens to be a big serious company does not use any SMTP authentication at all as well despite the fact that they have millions of users.. so.. not using it at all is not new, it's just having your users think that something is not working somewhere or having the users leave in searches for smarter providers that consider and provide all the flexibility of the options...