?
Solved

Can't send email

Posted on 2003-03-13
16
Medium Priority
?
378 Views
Last Modified: 2012-08-13
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
Comment
Question by:toteu
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
16 Comments
 
LVL 2

Expert Comment

by:ViTaMiN
ID: 8128369
have you got any event log errors ?
0
 

Author Comment

by:toteu
ID: 8128464
No event log errors
0
 
LVL 2

Expert Comment

by:ViTaMiN
ID: 8128501
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
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 
LVL 2

Expert Comment

by:varoujB
ID: 8128522
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
 

Author Comment

by:toteu
ID: 8128549
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
 

Author Comment

by:toteu
ID: 8128573
varoujB
I changed the primary smto from mydomain.LOCAL to mydomain.COM when I setup the second domain and I rebooted the server.
0
 
LVL 2

Expert Comment

by:ViTaMiN
ID: 8128610
can you trace an external domain on the exchange server ? if not its a dns question if so we have to look further
0
 

Author Comment

by:toteu
ID: 8128641
Vitamin
How can I trace an external domain on the Exchange Server?
0
 

Author Comment

by:toteu
ID: 8128652
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
 
LVL 2

Expert Comment

by:ViTaMiN
ID: 8128653
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
 

Author Comment

by:toteu
ID: 8128703
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
 
LVL 3

Expert Comment

by:SimonL-UK
ID: 8137562
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
 

Author Comment

by:toteu
ID: 8156147
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
 

Author Comment

by:toteu
ID: 8175563
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
 
LVL 20

Expert Comment

by:What90
ID: 10886161
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
 

Accepted Solution

by:
CetusMOD earned 0 total points
ID: 10922646
PAQed, with points refunded (350)

CetusMOD
Community Support Moderator
0

Featured Post

Problems using Powershell and Active Directory?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article explains how to install and use the NTBackup utility that comes with Windows Server.
This article will help to fix the below errors for MS Exchange Server 2013 I. Certificate error "name on the security certificate is invalid or does not match the name of the site" II. Out of Office not working III. Make Internal URLs and Externa…
The basic steps you have just learned will be implemented in this video. The basic steps are shown to configure an Exchange DAG in a live working Exchange Server Environment and manage the same (Exchange Server 2010 Software is used in a Windows Ser…
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…
Suggested Courses

765 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question