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Can't send email

Hi,
I have the next network design:

Internet
|
Firewall
1. Port 80 opened sends request to computer1
2. Port 25 opened sends request to computer2
3. Port 110 opened sends request to computer2

|

Computer1                
1)W2K server
2)Domain Controler(domain name mydomain.LOCAL)
3)IIS

Computer2
1)Exchange 2K
2)IIS

I changed Exchange so that can deal with two domains
- the internet domain: mydomain.COM
- the internal domain: mydomain.LOCAL

I installed an Outlook client that uses Exchange.

Problem:
I can receive emails but I cannot send any; when I check in the Exchange system manager I can see those emails under SMTP - queue hanging there; I checked the output log on the firewall and there is an SMTP entry for that email; however the email was not sent.

Is there a problem if I use 2 different domains? Should I use just mydomain.COM for my internal domain and for my external one?

Any ideas?

Thank you,
Nic.
0
toteu
Asked:
toteu
1 Solution
 
ViTaMiNCommented:
have you got any event log errors ?
0
 
toteuAuthor Commented:
No event log errors
0
 
ViTaMiNCommented:
can you resovle host names from your mail server

for example

in a dos prompt type
tracert www.microsoft.com

does it convert the url to an ip adres ?
0
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varoujBCommented:
U have two domain name as far as ur exchange is concerned.
so u probably have two smtp addresses assigned to each user
and it is most likley that local is their promary smtp
address.Go to one of the users email address tab in active
directory and users and make the internet domain the primary and see if u can send email.
0
 
toteuAuthor Commented:
No it doesn't ... the internal DNS is installed on Computer1.

There is another problem; when I try nslookup it says that there is no domain with the name mydomain.COM.

Do you think that the DNS doesn't work? What should I change in the DNS?
0
 
toteuAuthor Commented:
varoujB
I changed the primary smto from mydomain.LOCAL to mydomain.COM when I setup the second domain and I rebooted the server.
0
 
ViTaMiNCommented:
can you trace an external domain on the exchange server ? if not its a dns question if so we have to look further
0
 
toteuAuthor Commented:
Vitamin
How can I trace an external domain on the Exchange Server?
0
 
toteuAuthor Commented:
I forgot to tell you: Microsoft says that is necessary to modify the registry to add 3 new keys if I use a firewall; I tried that too without to open the ports on the firewall ... no luck
0
 
ViTaMiNCommented:
can you resovle host names from your mail server

for example

in a dos prompt type
tracert www.microsoft.com

does it convert the url to an ip adres ?
0
 
toteuAuthor Commented:
Vitamin
I can't give you an answer; I will try it tonight; the server is in another place and I can't access it remotely.
0
 
SimonL-UKCommented:
Sounds like either:

1) your exchange server can't do DNS resolution
   (Check the properties of your SMTP server and look under Default SMTP Server|Delivery|Advanced.  Check that your domain's FQDN (The Internet aware one) is correct and able to be verified and then select the Configure button for DNS.  Enter the Forwarders of your ISP)
or

2) Your firewall is not letting the SMTP traffic through
   (Is SMTP set to be bi-directional)
0
 
toteuAuthor Commented:
Sorry about the delay.

Vitamin,
If if run "tracert www.microsoft.com" the computer is able to convert the url into an ip.

I tried to send another email but I can't; I can see the email in Exchange System Manager, Default SMTP Virtual Server, Queues; if I right click on it ->properties -> it says "The handle is invalid".

SimonL-UK,
in advanced I have the FQDN(the internet one); if I press "Check DNS" button ->"The domain name is valid";if I press "Configure" button I have 3 DNS's(the internal one first and after that the other 2 external ones)

SMTP bi-directional???? what do you mean? Microsoft says that is necessary to configure the registry in order to use Exchange 2K behind a firewal but I was not able to do that. Is this the problem?

Thank you for your help guys,
Nic.
0
 
toteuAuthor Commented:
Hi,
I fix the problem; here is the answer:

http://www.msexchange.org/tutorials/Secure_your_Exchange_Server_on_the_Internet_for_100.html

I can't accept your answers as solution; read the above http and you will realise why.

Nic.
0
 
What90Commented:
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I will leave the following recommendation for this question in the Cleanup topic area:
   PAQ/ Refund

Any objections should be posted here in the next 4 days. After that time, the question will be closed.

What90
EE Cleanup Volunteer


0
 
CetusMODCommented:
PAQed, with points refunded (350)

CetusMOD
Community Support Moderator
0

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