1. Introduction
2. Prerequisites
3. Compile and Install Perl
4. Compile Sendmail
5. Compile and Install Sendmail::Milter
6. Configure Sendmail to work with your filter
7. Links
8. About

1.1 Description
This is a cookbook for the installation of Sendmail::Milter in RedHat 7.3 using .rpm
It will help you get a working setup of Sendmail and Sendmail::Milter perl package.

To get this working, we need to compile perl with support for threads. Also, sendmail must be compiled
because Sendmail::Milter makefile need its files. Then, Sendmail::Milter is compiled once the new version
of perl is installed and sendmail compiled

1.2 Conventions:
Commands:
Files:

2.1 You will need to have this rpm files installed:

2.2 You will need to have this rpm files:

2.3 You will need this .tar.gz files:

3.1 Install the .src.rpm


3.2 Edit the perl.spec file
Edit this file:
/usr/src/redhat/SPECS/perl.spec
the first lines should look like this:

3.3 Build Perl
Now, compile perl:

3.4 Install Perl
Once rpm finishes compiling perl, you need to install it:

3.5 Test the new perl rpm package
To see if threads are build-in into perl, do this:
You should see something like this:
usethreads=define use5005threads=undef useithreads=define usemultiplicity=undef

Now we need to have a compiled version of sendmail. We will just compile sendmail,
not build a rpm nor install a new version of it.

4.1 Install the .src.rpm
Install the .src.rpm package of sendmail:

4.2 Compile Sendmail
For compile only sendmail, do this:
Optionally, you can build the rpm like this if you have an i686 platform:

Now that we have perl installed and sendmail compiled, we can compile Sendmail::Milter.

5.1 Compile Sendmail::Milter
Uncompress the source file:
Please note that the directory:
/usr/src/redhat/BUILD/sendmail-8.11.6/obj.Linux.2.4.18-10.i686/
can be diferent in your computer, for example, something like this:
/usr/src/redhat/BUILD/sendmail-8.11.6/obj.Linux.2.4.18-10.i386/
or
/usr/src/redhat/BUILD/sendmail-8.11.6/obj.Linux.2.4.18-10.athlon/

6.1 edit your .mc file
edit /etc/mail/cf/my-redhat.mc and put this lines:

6.2 compile your .mc file

6.3 install you new .cf file

6.4 restart sendmail

6.5 start you perl Milter filter
To run your perl filter, use the socket defined in the .mc file.
For example, using the sample.pl file from the Sendmail::Milter distribution:

The output file should not content the output of the filter processing instanainly because some data is buffered. But when you exit the perl filter(with SIGINT) all the output content will be saved to the output file.

Now is time for some testing.

Sendmail::Milter home page
RedHat 7.3 rpms from the CDs
RedHat 7.3 official updates
RedHat 7.3 .iso images

Sendmail.org
RedHat.com
Perl portal
Milter.org portal
Milter implementation for filtering using Python

I made this page when I first installed Sendmail::Milter on RedHat 7.0.
Then, it became popular so I decided to update it to RedHat 7.3.

Feedback is welcome.