Apr 142016

i have already made this project previuosly using arduino uno, wiznet w5100 ethernet shield and 4 channel relay shield. But using Arduino nano + ENC29J60 lot cheaper. not mention it has smaller size. Once you get this badboy online on your network, you can control every device in your house using your smartphone or any gadget you have(that rely on your coding skill, ofcourse).

let’s the fun begin 🙂

wait, as usual i don’t do lots of talk so here’s the schematic and arduino code.

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Mar 222016

When you have webmail separated from your pop3/imap4 server things can be complicated if you don’t have direct access to mysql server over the network. using poppassd will not solving the problem if you’re using mysql, pgsql or ldap backend for storing user information. because (AFAIK) it only can access/change user/password on passwd/shadow file.

using courierpassd allows us to access or modify pop3/imap4 user information store in mysql, pgsl or ldap backend. one caveat, courierpassd using courier-authlib API in order to be able accessing those database backend. we have to install or build from source. courierpassd use the same protocol as poppassd does.

i’m using centos and this is how i do it.

first using non priviledged user cccount, create rpm build environment.

$ mkdir -p ~/rpmbuild/{BUILD,RPMS,SOURCES,SPECS,SRPMS}
$ echo '%_topdir %(echo $HOME)/rpmbuild' > ~/.rpmmacros

mkdir $HOME/rpm
mkdir $HOME/rpm/SOURCES
mkdir $HOME/rpm/SPECS
mkdir $HOME/rpm/BUILD
mkdir $HOME/rpm/SRPMS
mkdir $HOME/rpm/RPMS
mkdir $HOME/rpm/RPMS/i386

echo "%_topdir $HOME/rpm" >> $HOME/.rpmmacros

download courier-authlib and courierpassd source

wget http://prdownloads.sourceforge.net/courier/courier-authlib-0.60.2.tar.bz2
wget http://www.arda.homeunix.net/?ddownload=375 -O courierpassd.1.1.2.tar.gz

compile and install courier-authlib

$rpmbuild -ta courier-authlib-0.60.2.tar.bz2
$sudo rpm -ivh /home/youruser/rpm/RPMS/x86_64/courier-authlib-0.66.4-1.el6.x86_64.rpm
$sudo rpm -ivh /home/youruser/rpm/RPMS/x86_64/courier-authlib-devel-0.66.4-1.el6.x86_64.rpm
$sudo rpm -ivh /home/youruser/rpm/RPMS/x86_64/courier-authlib-mysql-0.66.4-1.el6.x86_64.rpm

extract courierpassd, compile and install

#tar xzf courierpassd.1.1.2.tar.gz
#cd courierpassd-1.1.2
#make install

you want be able to access this courierpassd from other server on the network. people using xinet.d usually.

#vi /etc/xinetd.d/courierpassd
service courierpassd
       disable          = no
       socket_type      = stream
       protocol         = tcp
       port             = 106
       wait             = no
       user             = root
       server           = /usr/sbin/courierpassd
       instances        = 10
       only_from        =

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