On Wed, August 13, 2014 11:50 am, Always Learning wrote: > > On Wed, 2014-08-13 at 18:32 +0200, Timothy Murphy wrote: >> If I had to read a book in order to install and configure postfix I would go back to sendmail. > > No one really wants to revert to Sendmail - do they ? > Sendmail exists forever. Postfix emerged a bit later, and postfix was written with security in mind. In case of sendmail on [huge] binary does everything, including listening to external port. There are quite likely multible bugs in large code. In case of postfix it is tiny piece of code (so there is virtually impossible to introduce bug into it) that listens to external ports. I was extremely happy to switch away from sendmail to postfix (and postfix configuration files are human readable!). Usually postfix comes more or less decently configured as a trivial mail server (both in case of CentOS rpm, and from postfix vendor if you download tarball and build it yourself - I probably should mention the author: Vietse Venema), you will need to make postfix listen to external connections though in main.cf. I can not compare postfix to exim, I never used exim. Building decent mail server with good spam filtering is different story, and requires some system administration knowledge. That is the reason for long replies that didn't appeal to you. RHEL is not there yet to claim as M$ does that you just get their product, few clicks and you have enterprise level [whichever service] and all auto-magically will work [thanks to RHEL and/or M$ great product]. They (RH) may be aiming to have it that way. If they succeed, anybody without special knowledge will be able to set up great Linux server, I guess. But, as I've heard once: "if even an idiot can use something only an idiot will use it". We'll see ;-) Valeri ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++