One IP can't connect

Hey!

I have set up ISPConfig on Debian 6. Everything is working fine, but I can't connect to my server on my smartphone with 3G. I can't ping, connect to webserver/ISPConfig CP or SSH.

When I turn on Wi-Fi on my smartphone, it all works, so I think it has to do something with the IP of my phone.

The only thing I could find about this was fail2ban, but fail2bans tells me there are no bans active:

Code:

root@backbone:~# fail2ban-client status
Status
|- Number of jail:      3
`- Jail list:           pureftpd, dovecot-pop3imap, ssh
root@backbone:~# fail2ban-client status pureftpd
Status for the jail: pureftpd
|- filter
|  |- File list:        /var/log/syslog
|  |- Currently failed: 0
|  `- Total failed:     1
`- action
   |- Currently banned: 0
   |  `- IP list:
   `- Total banned:     0
root@backbone:~# fail2ban-client status ssh
Status for the jail: ssh
|- filter
|  |- File list:        /var/log/auth.log
|  |- Currently failed: 0
|  `- Total failed:     0
`- action
   |- Currently banned: 0
   |  `- IP list:
   `- Total banned:     0
root@backbone:~# fail2ban-client status dovecot-pop3imap
Status for the jail: dovecot-pop3imap
|- filter
|  |- File list:        /var/log/mail.log
|  |- Currently failed: 0
|  `- Total failed:     0
`- action
   |- Currently banned: 0
   |  `- IP list:
   `- Total banned:     0

Does someone know if there is any other IP ban software in Debian/ISPConfig? Or what else it could be?

Thanks!

//EDIT
Additional information:
ISPConfig 3.0.5 installed with http://www.e-rave.nl/automatic-debian-system-installation-for-ispconfig-3

iptables -L:

Code:

Chain INPUT (policy ACCEPT)
target     prot opt source               destination
fail2ban-ssh  tcp  --  anywhere             anywhere            multiport dports ssh
fail2ban-pureftpd  tcp  --  anywhere             anywhere            multiport dports ftp
fail2ban-dovecot-pop3imap  tcp  --  anywhere             anywhere            multiport dports pop3,pop3s,imap2,imaps

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

Chain fail2ban-dovecot-pop3imap (1 references)
target     prot opt source               destination
RETURN     all  --  anywhere             anywhere

Chain fail2ban-pureftpd (1 references)
target     prot opt source               destination
RETURN     all  --  anywhere             anywhere

Chain fail2ban-ssh (1 references)
target     prot opt source               destination
RETURN     all  --  anywhere             anywhere

 

Maybe it is a routing problem of your mobile carrier.

 

Hey Falko, that was exactly the problem! My carrier unblocked the IP.

Thanks!