Email can go out, But do not receive replied email.

[ngutri]

I have home network with 2 PCs and installed Exchange 2000 on one of those PCs

(

http://192.168.11.5/Exchange)

I can send an email from any host to Yahoo. It is alright, no pronlem. But I can not receive any replied email from Yahoo. It seems to me that email is sent sucessfull from Yahoo. What is wrong?????

 

[ngutri]

More infor about the problem:

I have an email: testing@nt.dyndns.biz from Exchange 2000
I have an yahoo email testing@yahoo.com

When I send from testing@nt.dyndns.biz to testing@yahoo.com, it is ok, i got email at Yahoo and then
Click on Reply from testing@yaho.com to testing@nt.dyndns.biz, it is ok. But I did not receive the email from Yahoo. Hope you understand what I mean.
PS! nt.dyndns.biz is free domain. this free domain is not recognise inside the local network. anything wrong with it???

 

[ShakeelAKhan]

I checked by nslookup and saw mx record as hostmaster.dyndns.org. I think u need to ask ur service provider to create MX record for ur server nt.dyndns.biz and get it registered to DNS in order to recieve emails.

 

[ngutri]

I contacted the service prodvider. They said that MX record is nothing with them. If WAN IP is matched with my free domain, is alright. What should I do now?
PS!!! I got error emails which I sent from Yahoo to my Exchange 2000 2 days after

 

[Serbtastic]

Exactly what errors did you get in Yahoo?

 

[ngutri]

I deleted all error emails. But the errors were about email accoutn is not found.

 

[ngutri]

Hi. This is the qmail-send program at yahoo.com.
I'm afraid I wasn't able to deliver your message to the following
addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<testing@nt.dyndns.biz>:
Sorry, I wasn't able to establish an SMTP connection. (#4.4.1)
I'm not going to try again; this message has been in the queue too
long.

--- Below this line is a copy of the message.

Return-Path: <ngu_tri@yahoo.com>
Received: (qmail 32421 invoked by uid 60001); 11 May 2005 06:10:42
-0000
Comment: DomainKeys? See

http://antispam.yahoo.com/domainkeys

DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws;
s=s1024; d=yahoo.com;

b=qMXv7+lz3Tq/KhPA6vFSnzelpzZpAJVf4daUunrehoe+GmFFxS9iTw6itM3qymhx21lNaPhU
o2L33zhkl42naQ78GkaNKJ/2vDawbMtMEDY4RlKfYhnWP03KZYBAuqhCjjEUGXDPfqfvJCNrWS
Bylb2UVaYThZveziK2VxACZus=
;
Message-ID: <20050511061042.32419.qmail@web50203.mail.yahoo.com>
Received: from [193.215.248.123] by web50203.mail.yahoo.com via HTTP;
Tue, 10 May 2005 23:10:42 PDT
Date: Tue, 10 May 2005 23:10:42 -0700 (PDT)
From: nguyen tri <ngu_tri@yahoo.com>
Subject: testing
To: testing@nt.dyndns.biz
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="0-80428720-1115791842=:31377"

--0-80428720-1115791842=:31377
Content-Type: text/plain; charset=us-ascii

testing

__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around

http://mail.yahoo.com

--0-80428720-1115791842=:31377
Content-Type: text/html; charset=us-ascii

<DIV>testing</DIV><p>_________________________________________<br>Do
You Yahoo!?<br>Tired of spam? Yahoo! Mail has the best spam protection
around <br>

http://mail.yahoo.com

--0-80428720-1115791842=:31377--

 

[sab4you]

http://192.168.11.5/Exchange

right off the bat the first thing I notice is your using a private address range for your exchange server.

In order for this to work, you must have done 2 things.

As already said, your domain naming service should forward the MX record to your PUBLIC ip address. Not your private 192.168.x.x address as that doesnt work.

Then on your home network, configure your router to allow inbound port 25 and have it route it to 192.168.11.5

If you dont know what your public IP address is, visit

http://www.whatismyip.com

- also if this is new to you, make sure you have a static IP address.