Catatan

Sogo
http://www.sogo.nu/english.html

ISPmail with Squeeze
http://workaround.org/ispmail/squeeze

SSL Certificate for Dovecot
http://www.hosting.com/support/email/adding-an-ssl-cerificate-to-dovecot

iRedMail Integration with Active Directory
http://www.iredmail.org/wiki/index.php?title=Integration/Active.Directory.iRedMail
(don’t forget to visit it’s home page http://www.iredmail.org/)

All about Linux Email System
http://www.linuxmail.info/