HELP! mail problems still!!

When trying with the IP i'm getting the following error message:

Or with no username and user auth unticked i get.

 

Then Postfix isn't running, or a firewall is blocking it.
What's the output of

Code:

netstat -tap

and

Code:

iptables -L

?
Do you have a desktop firewall? That might also be the problem. Try to switch it off for testing purposes.

 

Netstat -tap results

iptables -L

 

I get this:

Code:

telnet 70.147.153.69 25
Trying 70.147.153.69...
Connected to 70.147.153.69.
Escape character is '^]'.

and then it hangs. So Postfix is running, but I guess myhostname is wrong. What's in /etc/postfix/main.cf and in /etc/resolv.conf?

Edit: Forget the above, it just took a little bit longer (10 seconds or so) until the server responded. This is the output:

Code:

mh1:~# telnet 70.147.153.69 25
Trying 70.147.153.69...
Connected to 70.147.153.69.
Escape character is '^]'.
220 server1.zcubed.co.uk ESMTP Postfix (Debian/GNU)
ehlo localhost
250-server1.zcubed.co.uk
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-AUTH LOGIN PLAIN
250-AUTH=LOGIN PLAIN
250 8BITMIME
quit
221 Bye
Connection closed by foreign host.

As far as I can see this is ok. Please check your desktop firewall.