iRedMail-0.5.1能用在这在个版RHEL不？
[root@mail iRedMail-0.5.1]# 2.6.9-42.EL
[root@mail iRedMail-0.5.1]# sh iRedMail.sh
< INFO > Checking necessary command/package: dialog/dialog.i386 ...
< INFO > Installing package(s): dialog.i386
Setting up Install Process
Setting up repositories
iRedMail                  100% |=========================|  951 B    00:00
iso                       100% |=========================|  951 B    00:00
Reading repository metadata in from local files
Parsing package install arguments
No Match for argument: dialog.i386
Nothing to do
< INFO > Check configuration file: /root/iRedMail-0.5.1/config...       Found, but not finished.
/root/iRedMail-0.5.1/dialog/config_via_dialog.sh: line 39: dialog: command not found
< INFO > Exit.