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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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AWSRES(1)							 AWS User's Guide							 AWSRES(1)

NAME
awsres - build resource files for Ada Web Server applications SYNOPSIS
awsres [-h] [-r unit] [-q] file... DESCRIPTION
The Ada Web Server is a library that allows you to embed a web server into your Ada application. It provides not only HTTP but also SOAP, WSDL and several other facilities. Thus you can write full-fledged web applications. awsres allows you to embed resources, such as pic- tures, into your final executable, so that your executable is completely self-contained and does not need to read other files at run time. awsres works by creating Ada source files that contain the data for your resources as arrays of bytes. You then compile these Ada source files into your executable. At run time, the AWS library automatically loads the resources from the executable whenever available. awsres creates one parent Ada package named, by default, `res', and one child package for each of the files given on the command line. The package `res' registers each resource when your application starts. To link `res' into your executable you simply add a `with res;' state- ment in one of your source files. EXAMPLE
$ ls image.png $ awsres image.png AWSRes - Resource Creator v1.0 creating image.png... -> registered $ ls res.adb res.ads res-image_png.ads image.png OPTIONS
-h Display help message. -r name Set the root unit name. Default is `res'. -q Quiet mode. SEE ALSO
wsdl2aws(1) The Ada Web Server User's Guide in package libaws1-doc. AUTHOR
awsres was written by Dmitriy Anisimkov <anisimkov@yahoo.com> and Pascal Obry <p.obry@wanadoo.fr> as part of the Ada Web Server. This manual page was written by Ludovic Brenta <ludovic.brenta@insalien.org> for Debian GNU/Linux. GNU Ada Tools 29 JAN 2004 AWSRES(1)
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