==== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.3
- Linux/BSD distribution name and version: CentOS 6.7 final
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP
- Web server (Apache or Nginx): Apache
- Manage mail accounts with iRedAdmin-Pro? yes
- Related log if you're reporting an issue: how show login fail? i'm newbie
maillog:
Jan 23 02:08:57 mail01 postfix/smtp[3442]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused
Jan 23 02:08:57 mail01 postfix/smtp[3444]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused

====

i installed iredmail 0.9.3 anything is fine
i have problem after upgrade to iredadmin pro. i can't login to iredadmin page.
my command update:

[root@mail tools]# bash upgrade_iredadmin.sh
* Detected Linux/BSD distribution: RHEL
* HTTP server root: /var/www
* Found iRedAdmin directory: /var/www/iredadmin, symbol link of /var/www/iRedAdmin-0.4.3
* Found iRedAdmin config file: /var/www/iredadmin/settings.py
* Copying new version to /var/www/iRedAdmin-Pro-LDAP-2.4.0
* Removing old symbol link /var/www/iredadmin
* Creating symbol link /var/www/iredadmin to /var/www/iRedAdmin-Pro-LDAP-2.4.0
* [2016-01-23 01:42:13] Delete all existing sessions, admins are forced to re-login to iRedAdmin.
* Check and install dependent Python modules:
  + [required] json or simplejson
  + [optional] BeautifulSoup
  + [optional] lxml
* iRedAdmin was successfully upgraded, restarting web service is required.
* Restart service (httpd) to use new iRedAdmin release now? [Y|n] y
Stopping httpd:                                            [  OK  ]
Starting httpd:                                            [  OK  ]
* Upgrading completed.
<<< NOTE >>> If iRedAdmin doesn't work as expected, please post your issue in
<<< NOTE >>> our online support forum: http://www.iredmail.org/forum/