Install Cyrus-SASL
We will need openssl dependencies when installing postfix MTA.
We also need Cyrus-SASL to work with postfix MTA because postfix will using cyrus-sasl for authentication.
Compiling Cyrus-SASL
#cd /root/postfixrocks
#tar -zxvf cyrus-sasl-2.1.23.tar.gz
#cd cyrus-sasl-2.1.23
#./configure --enable-anon --enable-plain --enable-login --enable-sql --disable-krb4 --disable-otp --disable-cram --disable-digest --with-mysql --without-pam --without-saslauthd --without-pwcheck --prefix=/usr --with-plugindir=/usr/lib/sasl2
#make && make install