Koukám, že jsem napsal chaos (a mám v tom bordel)....
1. u registrátora:
domena.cz A VIP
*.domena.cz CNAME domena.cz
domena.cz MX 10 server1.domena.cz
2. dig -t MX domena.cz - vypíše: domena.cz. 1358 IN MX 10 server1.domena.cz.
3. ping na server1.domena.cz ze světa prochází
PING domena.cz (VIP) 56(84) bytes of data.
64 bytes from host035.pripojovatel.cz (VIP): icmp_seq=1 ttl=52 time=160 ms
64 bytes from host035.pripojovatel.cz (VIP): icmp_seq=2 ttl=52 time=189 ms
4. root@server1:~# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
root@server1:~#
5. router - nastaveno: Firewall > DMZ :: VIP > 192.168.1.2 (server1)
The DMZ feature allows you to specify one computer on your network to be placed outside of the NAT firewall. This may be necessary if the NAT feature is causing problems with an application such as a game or video conferencing application. Use this feature on a temporary basis. The computer in the DMZ is not protected from hacker attacks. To put a computer in the DMZ, enter the last digits of its IP address in the field below and select "Enable". Click "Submit" for the change to take effect.
6. pokud zadám ze světa:
telnet domena.cz 89(neexistuje) - okamžitě vypíše: Trying VIP... a Unable to connect to remote host: Connection refuse
pokud zadám pop3 - vypíše: +OK Dovecot ready
smtp (25) - vypíše: Trying VIP... a po dlouhé době (5min?)... Unable to connect to remote host: Connection refuse
chová se na 25 jako když hledá a hledá, ale nenachází
![Šok :o](https://forum.ubuntu.cz/Smileys/default/shocked.gif)
)
7. PLS
![Šok :o](https://forum.ubuntu.cz/Smileys/default/shocked.gif)
(