Dear Robert Moskowitz The link * http://campworld.net/thewiki/pmwiki.php/LinuxServersCentOS/Cent6VirtMailServer * you suggested is working great for me so far. At one point it says Configuring Postfix Here we go with more config files. You'll have to be sure to change some settings to match your host. The config files will have sections commented out. Don't worry about it. These sections are for spam/virus/sympa configuration. Just copy and past to create the config files. What ever you see here replaces what already exists. The main postfix config files. /etc/postfix/main.cf When I checked, I did not find any folder postfix in my /etc path. Even I searched the whole machine, I did not get main.cf anywhere. Does it mean that I have done some mistake somewhere in earlier steps. Even, in main.cf file given in above link has an entry as below. *daemon_directory = /usr/libexec/postfix* But in my machine I do not see any postfix folder in path /usr/libexec. However I found /var/lib/postfix folder. So should I use /var/lib/postfix instead of */usr/libexec/postfix*. Please guide me. -Austin On Mon, Mar 11, 2013 at 9:13 AM, Robert Moskowitz <rgm at htt-consult.com>wrote: > > On 03/10/2013 10:54 PM, Austin Einter wrote: > >> Dear All >> I am planning to setup mail server for my domain. >> >> Which one is preferred postfix or sendmail. >> > > I switched to postfix 3 years ago, and never looked back. > > I came across a link * >> http://ostechnix.wordpress.**com/2013/02/08/setup-mail-**server-using-** >> postfixdovecotsquirrelmail-in-**centosrhelscientific-linux-6-** >> 3-step-by-step/<http://ostechnix.wordpress.com/2013/02/08/setup-mail-server-using-postfixdovecotsquirrelmail-in-centosrhelscientific-linux-6-3-step-by-step/> >> * for postfix mail setup. >> > > Here are two very good links: > > http://campworld.net/thewiki/**pmwiki.php/LinuxServersCentOS/** > Cent6VirtMailServer<http://campworld.net/thewiki/pmwiki.php/LinuxServersCentOS/Cent6VirtMailServer> > http://wiki.centos.org/HowTos/**Amavisd<http://wiki.centos.org/HowTos/Amavisd> > > I have used both as guideposts, and found problems with both, as people > here and on related lists will attest to be the questions resulting by > following other's instructions lead to strangeness. I really suggest that > you step slowly into this. There is a lot to do to get all the pieces > together. A lot you need to understand with each package. And then things > not even covered, but you are expected to know when setting up a server. > Like php.conf, you need to set your timezone. None of the tutorials for > things like roundcube tell you this; you are expected to know about using > php. > > > It says, >> Prerequisites: >> >> - The mail server should contain a valid MX record in the DNS server. >> >> Navigate to this link how to setup DNS >> server<http://ostechnix.**wordpress.com/2013/01/25/** >> setup-dns-server-step-by-step-**in-centos-6-3-rhel-6-3-** >> scientific-linux-6-3-3/<http://ostechnix.wordpress.com/2013/01/25/setup-dns-server-step-by-step-in-centos-6-3-rhel-6-3-scientific-linux-6-3-3/> >> > >> . >> - Firewall and SELinux should be disabled. >> > > You should never disable the server firewall. It is easy to figure out > what ports are necessary and open only those. As far as selunix, this is > hard. I have been given a set of scripts to work out what to enable for > selinux, and this is still a work in progress for me. > > > I have disabled iptables as my m/c is behind the firewall. >> > > So what? Read the press about "Advance Persistant Threats". Only open > what is necessary. > > > It says I need to disable firewall. Is it really required. Kindly let me >> know. >> > > Figure out the ports you need. This is not hard. It is easy compared to > the rest you will have to learn. > > I have the wounds, even with my kevlar suit. :) > > BTW, I am putting together my own blog on what I am doing. I have to work > out a few pieces to get my mysql passwords out of the scripts I use, but I > have learned a lot over the past few months, and really should share. some. > > >