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Operating Systems Linux Red Hat I need help configuring postfix mail server within AWS Post 302983834 by Padow1 on Monday 17th of October 2016 03:53:05 PM
Old 10-17-2016
Two things to check:

1) Did you configure postfix to listen on the correct IP in /etc/postfix/main.cf? inet_interfaces is probably the option you are looking for. you can see if postfix is listening with:
Code:
lsof -i :25

2) are you allowing inbound port 25 traffic in your ec2 security group?

Setting up a mail server is not easy. If you are interested in a guide to get all the necessary pieces set up, here is what I used. This guide is based on ubuntu, but I was able to get all of this working on a CentOS7 KVM instance that I then converted and is running in EC2. The only real bang-your-head-against-the-wall pieces with these instructions were getting clamav and spamassassin and their associated milters to work properly. Once that is all working, converting it to use mysql for passwords and accounts was fairly simple.
 

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casparize(1)							  USER COMMANDS 						      casparize(1)

  NAME
      casparize - Set up caspar Makefile in a new directory

  SYNOPSIS
      casparize dir (/path/to/config/dir)

      casparize file (/path/to/config/dir/file)

  DESCRIPTION
      casparize  creates  a  new  configuration  working directory in your current working directory, sets up a Makefile for caspar(7) in this new
      directory, and optionally copies an original configuration file from its original system place to the newly  created  configuration  working
      directory.

  USAGE
      You typically use casparize when you already have created the root configuration working directory with its include directory and install.mk
      Caspar include file. By analysing your current working directory and the configuration directory path you give on  the  command  line,  cas-
      parize  can  deduce the contents of the Makefile in the newly created configuration working directory. It creates the new directory, creates
      the correct Makefile, and optionally copies the given configuration file in the new directory, ready for its first version commit.

  EXAMPLES
      A typical example:

	$ cd <svn>/etc
	$ casparize /etc/postfix/main.cf

      creates the directory <svn>/etc/postfix, creates <svn>/etc/postfix/Makefile including the proper content,  and  copies  /etc/postfix/main.cf
      into <svn>/etc/postfix/main.cf. You can now directly add and commit the new directory.

  BUGS
      Non known at this moment.

  AUTHOR
      Jeroen Hoppenbrouwers

  SEE ALSO
      caspar(7) The caspar homepage is at http://mdcc.cx/caspar/ .

  casparize 20120508						      8 mai 2012							casparize(1)
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