Solved

DNS and Public IPs Address

Posted on 2013-10-25
4
225 Views
Last Modified: 2013-10-28
Hello I am really need your help.

My current ISP is AT&T and I am changing to another ISP because I need better speed and better price.

My new ISP sent me some information, they say that I need to do some changes on my server.  

My network is very simple, my sbs 2003 has an exchange server that download our emails from our Email provider (my server doesn't connect directly to the internet), I do not have VPN, so we have asigned IPs Public but we do not use them.

I am sending an attachment with my current router cabling and addressing diagram(from AT&T) and the values that I have on my server. Based on this information what are the changes that I need to do on my side(server).

The tecnician came and confused me about the IPs Public.

Thank you for your help
EXPERTEXCHANGEREPLACE.pdf
0
Comment
Question by:aggieto
  • 2
4 Comments
 
LVL 22

Accepted Solution

by:
Nick Rhode earned 500 total points
ID: 39601721
You have DNS forwarders setup those will need to be removed from the DNS server for you are switching providers.

Another thing is mail will stop if your using exchange because your IP address will no longer exist.  Who hosts your MX records (your domain).  If I was going to look up your MX record it would be *example* mail.domain.com.  You would have to contact or edit these external DNS records to point to your new WAN address.  Also make sure your ISP sets up the reverse DNS for that record so mail.domain.com = 111.111.111.111 and 111.111.111.111 = mail.domain.com etc.  You will also have to change any other public DNS record like autodiscover and all that jazz also.

Also as a special note I would take that picture down.  That is some descriptive information about your environment and it could be used in a malicious manner if you know what I mean
0
 

Author Comment

by:aggieto
ID: 39603124
Thanks for your comments.

First: How can I remove my pictures?

Second: About my Exchange: I set up this for internal. I have an Email provider so I can see emails over the internet but the exchange server can use my email provider settings(using POP3) to download our emails(for each user: user id and password) and put these emails on each user exchange mailbox.

Nobody host my MX records. My Exchange is not setup correctly I know but  I have used it like that for a long time.

In these case my current internet provider do not setup reverse DNS for my exchange.

I hope, my explanation is clear for you.  Based on this tell me please if the only change are DNS Forwarders or I need to do something else.


What about the Public IPs that they gave me? I need to do something whit these?

Thanks,

Again, how can I remove my pictures?
0
 

Author Comment

by:aggieto
ID: 39606623
Thank you, thank you, thank you!!!
0

Featured Post

What Security Threats Are You Missing?

Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

Join & Write a Comment

Greetings, Experts! First let me state that this website is top notch. I thoroughly enjoy the community that is shared here; those seeking help and those willing to sacrifice their time to help. It is fantastic. I am writing this article at th…
We recently endured a series of broadcast storms that caused our ISP to shut us down for brief periods of time. After going through a multitude of tests, we determined that the issue was related to Intel NIC drivers on some new HP desktop computers …
This video discusses moving either the default database or any database to a new volume.
When you create an app prototype with Adobe XD, you can insert system screens -- sharing or Control Center, for example -- with just a few clicks. This video shows you how. You can take the full course on Experts Exchange at http://bit.ly/XDcourse.

762 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

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now