Solved

Exchange Email through firewall (Netvanta 3430) and programming port forward

Posted on 2008-06-17
3
1,114 Views
Last Modified: 2008-06-18
I have a Netvanta 3430 supplying T1 access to my office. I recently installed a SBS 2003 machine with Exchange. I set up an MX record with my ISP, but the SMTP port 25 is blocked somewhere, so email is not coming through.

Error: No connection could be made because the target machine actively refused it.

I believe this is in the NetVanta. Needs someone with some real pro in them, or this will be another (third this month) deleted question with no points... :(
0
Comment
Question by:Elixir2
[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
  • 3
3 Comments
 
LVL 1

Author Comment

by:Elixir2
ID: 21813215
UPDATE:
I used the NetVanta wizard to configure the firewall. The firewall now forwards port 25 to the SBS server. But still no joy on email.

Using http://www.mxtoolbox.com/diagnostic.aspx it shows the same IP and error as above.

I went to my web host and changed the IP address for mail.subdomain.com to equal the WAN port of the Netvanta. When I ping mail.subdomain.com this morning, it shows the correct IP address. When I put that IP address in the MXToolBox diagnostic, I get a response from my mailserver! It says HELO and says no-relay and all is good.

SO WHY IS THIS NOT WORKING?
0
 
LVL 1

Author Comment

by:Elixir2
ID: 21813275
UPDATE:

Using the MX Lookup Tool at the same link as above, it shows the wrong IP address. Is it possible that this DNS change has simply not made it down to the rest of the Internet?  That's very slow imo... but since this is my email I may be rather impatient. :)

IS ANYONE READING THIS?
0
 
LVL 1

Accepted Solution

by:
Elixir2 earned 0 total points
ID: 21814856
LOL. Too slow get back.

I found the solution in the EE article ID:21074806.

Also helpful:
http://www.spamhelp.org/shopenrelay/shopenrelaytest.php
http://support.microsoft.com/kb/323350
http://www.zoneedit.com/smtp.html

What is going on with EE? No responses??

I guess I'm just asking questions that are too hard for the "Experts."
0

Featured Post

Are your AD admin tools letting you down?

Managing Active Directory can get complicated.  Often, the native tools for managing AD are just not up to the task.  The largest Active Directory installations in the world have relied on one tool to manage their day-to-day administration tasks: Hyena. Start your trial today.

Question has a verified solution.

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

Find out what you should include to make the best professional email signature for your organization.
This article aims to explain the working of CircularLogArchiver. This tool was designed to solve the buildup of log file in cases where systems do not support circular logging or where circular logging is not enabled
In this video we show how to create an email address policy in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.:  First we need to log into the Exchange Admin Center. Navigate to the Mail Flow…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

707 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