View the most recent changes for the procmail port at: procmail.darwinports.com/diff
Scroll down toward the bottom of the page to get installation instructions for procmail.
The raw portfile for procmail 3.22 is located here:
http://procmail.darwinports.com/dports/mail/procmail/Portfile
Find related portfiles with the unique DarwinPorts.com search feature.
Check for any related Fink projects here: pdb.finkproject.org/pdb/package.php/procmail

The procmail Portfile 50572 2009-05-04 19:19:09Z jeremyhu macports.org $
PortSystem 1.0

Name: procmail
Version: 3.22
Revision: 2
Category: mail
Maintainers: nomaintainer
Description: A local mail delivery agent
Long Description: The procmail mail processing program can be used to create mail-servers, mailing lists, sort your incoming mail into separate folders/files (real convenient when subscribing to one or more mailing lists or for prioritising your mail), preprocess your mail, start any programs upon mail arrival (e.g. to generate different chimes on your workstation for different types of mail) or selectively forward certain incoming mail automatically to someone. Procmail can be used: - and installed by an unprivileged user (for himself only). - as a drop in replacement for the local delivery agent /bin/mail (with biff/comsat support). - as a general mailfilter for whole groups of messages (e.g. when called from within sendmail.cf rules). The accompanying formail program enables you to generate autoreplies, split up digests/mailboxes into the original messages, do some very simple header-munging/extraction, or force mail into mail-format (with leading From line).
Homepage: http://www.procmail.org/
Master Sites: ftp://ftp.procmail.org/pub/procmail/ ftp://ftp.psg.com/pub/unix/procmail/ ftp://ftp.ucsb.edu/pub/mirrors/procmail/ ftp://ftp.informatik.rwth-aachen.de/pub/packages/procmail/ ftp://ftp.fu-berlin.de/pub/unix/mail/procmail/ ftp://ftp.net.ohio-state.edu/pub/networking/mail/procmail/ ftp://ftp.fdt.net/pub/unix/packages/procmail/ ftp://ftp.tamu.edu/pub/mirrors/procmail/ ftp://ftp.kfki.hu/pub/packages/mail/procmail/ ftp://giswitch.sggw.waw.pl/pub/unix/procmail/ ftp://ftp.solarisguide.com/pub/procmail/ ftp://ftp.win.ne.jp/pub/network/mail/procmail/ http://www.ring.gr.jp/archives/net/mail/procmail/ ftp://ftp.ring.gr.jp/pub/net/mail/procmail/ ftp://ftp.ayamura.org/pub/procmail/ ftp://sunsite.cnlab-switch.ch/mirror/procmail/ ftp://ftp.gigabell.net/pub/procmail/ ftp://ftp.linja.net/pub/mirrors/procmail/ ftp://ftp.stealth.net/pub/mirrors/ftp.procmail.org/pub/procmail/ ftp://ftp.mirror.ac.uk/sites/ftp.procmail.org/pub/procmail/
Checksums: md5 1678ea99b973eb77eda4ecf6acae53f1
Platform: darwin

configure {
system "cd ${worksrcpath} && mv INSTALL INSTALL.README"
reinplace "s%^/\\*\\(#define\[ \t\]*DEF\[S\]*PATH\[ \t\]*\".*\\)\".*$%\\1:${prefix}/bin\"%" ${worksrcpath}/config.h
reinplace "s%/etc/procmailrc%${prefix}/etc/procmailrc%" ${worksrcpath}/config.h
reinplace "s%/usr/local%${prefix}%g" ${worksrcpath}/Makefile
reinplace "s%(BASENAME)/man%(BASENAME)/share/man%" ${worksrcpath}/Makefile }

build.args BASENAME=${destroot}${prefix} LOCKINGTEST=/tmp
destroot.args BASENAME=${destroot}${prefix} LOCKINGTEST=/tmp install-suid

If you haven't already installed Darwin Ports, you can find easy instructions for doing so at the main Darwin Ports page.
Once Darwin Ports has been installed, in a terminal window and while online, type the following and hit return:

%  cd /opt/local/bin/portslocation/dports/procmail
%  sudo port install procmail  
Password: 

You will then be prompted for your root password, which you should enter. You may have to wait for a few minutes while the software is retrieved from the network and installed for you. Y ou should see something that looks similar to:

--->  Fetching procmail
--->  Verifying checksum for procmail
--->  Extracting procmail
--->  Configuring procmail
--->  Building procmail with target all

--->  Staging procmail into destroot

--->  Installing procmail

- Make sure that you do not close the terminal window while Darwin Ports is working. Once the software has been installed, you can find further information about using procmail with these commands:

%  man procmail
%  apropos procmail
%  which procmail
%  locate procmail

 Where to find more information: