mod_smtpd is very easy to install and setup. First, we need to build the module and make the Apache HTTPd webserver load it. Then, we'll setup our archives repository and complete Apache's configuration.

mod_smtpd has, of course, some requirements :

• Apache HTTPd >= 2.2 (mod_smtpd has been tested succesfully with Apache 2.2.0 and 2.3.0-dev)
• APR and APR-Util >= 0.9
• libapreq2

Checkout sources via Subversion :

svn checkout https://svn.apache.org/repos/asf/httpd/mod_smtpd/trunk mod_smtpd

Then, build mod_smtpd :

./autogen.sh
./configure
make clean all
su -c 'make install'

Refer to the configure help (./configure --help) if you need a to specify an installation prefix (--prefix=...) or any other specific setup.

The next step is to make Apache HTTPd load the mod_smtpd module at runtime. Edit your Apache configuration file, and add the following to the rest of the LoadModule lines :

LoadModule smtpd_module /usr/lib/apache2/modules/mod_smtpd.so

Or replace that directory with your default Apache 2.2 install directory.

You now need to configure Apache to run mod_smtpd whenever a network connection comes in. We recommend this virtual host setup:

NameVirtualHost *:80
NameVirtualHost *:25

<VirtualHost *:80>
# your webserver configuration here
</VirtualHost >

<VirtualHost *:25>
ServerName localhost # or whatever desired
SmtpProtocol On
# addition mod_smtpd or associated plugin configuration here
</VirtualHost >