iRedMail works on PC-BSD-9.1. but i just found this (http://wiki.pcbsd.org/index.php/Install … D®_Updated):
NOTE: users are highly discouraged from using FreeBSD packages or ports or upgrade tools such as portupgrade or portversion from the PC-BSD® command line as Update Manager will remove your manually installed applications and upgrades. If you wish to practice using these tools, instead use Warden® to create a ports jail. If you think an application belongs in the base system (e.g. an add-on to a desktop meta-package), suggest that it be added using one of the resources in the Finding Help section.
So, i will stop working on PC-BSD support, please use FreeBSD instead. Sorry.