修改ip为173.254.22.21 或  106.187.51.47   还是不行，请大神指点！
[root@mail iRedMail-0.9.2]# bash iRedMail.sh
< SKIP > Function: check_new_iredmail.
< SKIP > Function: create_repo_rhel.
[ INFO ] Install package: wget
[ INFO ] Installing package(s): wget
Loaded plugins: fastestmirror
base                                                         | 3.6 kB  00:00:00     
extras                                                       | 3.4 kB  00:00:00     

Current download cancelled, interrupt (ctrl-c) again within two seconds
to exit.

One of the configured repositories failed (iRedMail),
and yum doesn't have enough cached data to continue. At this point the only
safe thing yum can do is fail. There are a few ways to work "fix" this:

     1. Contact the upstream for the repository and get them to fix the problem.

     2. Reconfigure the baseurl/etc. for the repository, to point to a working
        upstream. This is most often useful if you are using a newer
        distribution release than is supported by the repository (and the
        packages for the previous distribution release still work).

     3. Disable the repository, so yum won't use it by default. Yum will then
        just ignore the repository until you permanently enable it again or use
        --enablerepo for temporary usage:

            yum-config-manager --disable iRedMail

     4. Configure the failing repository to be skipped, if it is unavailable.
        Note that yum will try to contact the repo. when it runs most commands,
        so will have to try and fail each time (and thus. yum will be be much
        slower). If it is a very temporary problem though, this is often a nice
        compromise:

            yum-config-manager --save --setopt=iRedMail.skip_if_unavailable=true

failure: repodata/repomd.xml from iRedMail: [Errno 256] No more mirrors to try.
http://iredmail.org/yum/rpms/7/repodata/repomd.xml: [Errno 15] user interrupt
[ INFO ] Fetching source tarballs ...
[ INFO ] + 1 of 3: http://173.254.22.21/yum/misc/iRedAdmin-0.4.2.tar.bz2
get_all.sh: line 108: wget: command not found
[ INFO ] + 2 of 3: http://173.254.22.21/yum/misc/iRedAPD-1.6.0.tar.bz2
get_all.sh: line 108: wget: command not found
[ INFO ] + 3 of 3: http://173.254.22.21/yum/misc/roundcube … ete.tar.gz
get_all.sh: line 108: wget: command not found
[ INFO ] Validate packages ...md5sum: misc/iRedAdmin-0.4.2.tar.bz2: No such file or directory
md5sum: misc/iRedAPD-1.6.0.tar.bz2: No such file or directory
md5sum: misc/roundcubemail-1.1.1-complete.tar.gz: No such file or directory
md5sum: WARNING: 1 line is improperly formatted
md5sum: WARNING: 3 listed files could not be read
misc/iRedAdmin-0.4.2.tar.bz2: FAILED open or read
misc/iRedAPD-1.6.0.tar.bz2: FAILED open or read
misc/roundcubemail-1.1.1-complete.tar.gz: FAILED open or read
    [ FAILED ]
<< ERROR >> MD5 check failed. Script exit ...

# Where to fetch/store binary packages and source tarball.
export IREDMAIL_MIRROR="${IREDMAIL_MIRROR:=http://173.54.22.21}"
export PKG_DIR="${_ROOTDIR}/pkgs"
export PKG_MISC_DIR="${_ROOTDIR}/misc"

if [ X"${DISTRO}" == X"RHEL" ]; then
    # Special package.
    # command: which.
    export BIN_WHICH='which'
    export PKG_WHICH='which'
"pkgs/get_all.sh" 261L, 7483C 已写入
[root@mail iRedMail-0.9.2]# ls
ChangeLog  conf  dialog  Documentations  functions  iRedMail.sh  patches  pkgs  README.md  samples  tools
[root@mail iRedMail-0.9.2]# bsah iRedMail.sh
-bash: bsah: command not found
[root@mail iRedMail-0.9.2]# /bin/bash iRedMail.sh
[ INFO ] Checking new version of iRedMail ...
[ INFO ] Preparing yum repositories ...
[ INFO ] Installing package(s): epel-release
Loaded plugins: fastestmirror
Setting up Install Process
Loading mirror speeds from cached hostfile
* base: mirrors.btte.net
* extras: mirrors.sina.cn
* updates: mirrors.163.com
base                                                                                                        | 3.7 kB     00:00     
extras                                                                                                      | 3.4 kB     00:00     
http://173.54.22.21/yum/rpms/6/repodata/repomd.xml: [Errno 12] Timeout on http://173.54.22.21/yum/rpms/6/repodata/repomd.xml: (28, 'connect() timed out!')
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: iRedMail. Please verify its path and try again
[ INFO ] Fetching source tarballs ...
[ INFO ] + 1 of 3: http://173.54.22.21/yum/misc/iRedAdmin-0.4.2.tar.bz2
[ INFO ] + 2 of 3: http://173.54.22.21/yum/misc/iRedAPD-1.6.0.tar.bz2
[ INFO ] + 3 of 3: http://173.54.22.21/yum/misc/roundcubem … ete.tar.gz
[ INFO ] Validate packages ...md5sum: misc/iRedAdmin-0.4.2.tar.bz2: No such file or directory
md5sum: misc/iRedAPD-1.6.0.tar.bz2: No such file or directory
md5sum: misc/roundcubemail-1.1.1-complete.tar.gz: No such file or directory
md5sum: WARNING: 3 of 3 listed files could not be read
misc/iRedAdmin-0.4.2.tar.bz2: FAILED open or read
misc/iRedAPD-1.6.0.tar.bz2: FAILED open or read
misc/roundcubemail-1.1.1-complete.tar.gz: FAILED open or read
        [ FAILED ]
<< ERROR >> MD5 check failed. Script exit ...

IP 是 173.254.22.21。