unable to telnet (i am at strange)

[ilnaiduccna]

Hi Experts,

We have one incoming email server for abc.dk domain with the public IP 195.24.x.xx which is NATted to 192.168.xxx.xx . telnet to the 25 port on 195.24.x.xx is not happening where as it is happening on 192.168.xxx.xx .

Can somebody please suggest me what is related problem?

When i do a telnet "telnet 195.24.x.xx 25"

I get a blank screen, and after approx 25 secs i get this error:" 421 Cannot connect to SMTP server 195.24.x.xx (195.24.x.xx:25), connect error 10060"

People I am eagerly waiting for your's early helpful response.

Regards,

Naidu.

[singhsaju]

Hello Naidu,

Where are you doing NAT ? Router or Firewall?

Can you post config of that device?

Saju

[ilnaiduccna]

Hi Saju,

We done the NAT on Firewall.

Please find the attached file for config and give me the early suggestion.

Regards,

Naidu.

[ilnaiduccna]

Hi Saju,

Please find the attached file for config and give me the early suggestion as i am in strange.

Regards,

Naidu.

[singhsaju]

Hello Naidu,

Can you check if following NAT statements involve the NAT of the host.Here the same ip /ports is Nated to two different ip addresses.This could be issue here .

From the config :

ip nat inside source static tcp 192.168.199.20 25 195.24.4.69 25 extendable

ip nat inside source static tcp 192.168.199.20 25 195.24.4.68 25 extendable

You can consider (after checking ) removing one of the NAT statements and then check

HTH

Saju

Pls rate helpful posts

[ilnaiduccna]

Hi Saju,

Nice to see your reply.

I have removed the another NAT rule but no go still there is a problem.

Please suggest me.

Regards,

Naidu.

[singhsaju]

Did you clear NAT translations after that?

Clear ip nat translations *

[ilnaiduccna]

Hi Saju,

I have cleared more times but no go.

Regards,

Naidu.

[singhsaju]

Can you let us know the private ip address that is in question here? pls post the latest config .