PostFix on AmazonLinux

Using Amazon Linux, a clean install...
(from http://wiki.centos.org/HowTos/postfix)
(remember to sudo where appropriate, or "sudo su -" to run everything as root)

    yum install postfix dovecot
    yum remove sendmail


add/update the following in /etc/postfix/main.cf
  myhostname = mail.YOURDOMAIN.COM
  mydomain = YOURDOMAIN.com
  myorigin = $mydomain
  inet_interfaces = all
  mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
  mynetworks = 192.168.0.0/24, 127.0.0.0/8
  relay_domains =
  home_mailbox = Maildir/
    

Add aliases:
  sudo nano /etc/aliases
    (edit the file as appropriate)
  sudo newaliases
    (loads the file)

add the following in /etc/dovecot.conf:
  protocols = imap imaps pop3 pop3s
  mail_location = maildir:~/Maildir
  pop3_uidl_format = %08Xu%08Xv
  # Required on x86_64 kernels
  login_process_size = 64

then run:
  chkconfig --level 345 dovecot on
  /etc/init.d/dovecot start
  /etc/init.d/postfix start

(use postfix reload if you ever change postfix conf)

Now stop the sendmail service and then start Postfix:
  /etc/init.d/sendmail stop
  /etc/init.d/postfix start

then I use mutt as a local mail client:
  yum install mutt

add to ~/.muttrc:
  set mbox_type=Maildir
  set folder="~/Maildir"
  set mask="!^\\.[^.]"
  set mbox="~/Maildir"
  set record="+.Sent"
  set postponed="+.Drafts"
  set spoolfile="~/Maildir"

set up your DNS records...
  add an "A record" to mail.YOURDOMAIN.COM with the IP address.

  add an MX record to @, or if using Route53, leave the name field blank.  Value is:
    10  mail.YOURDOMAIN.com