Solved

SonicWall NAT

Posted on 2014-03-07
6
356 Views
Last Modified: 2014-03-10
Hello Experts!

I have a working NSA2400 with failover (ATT & Comcast).

All my inbound mail flows via ATT (X1) and outbound via Comcast (X5). I would like to have outbound mail also flow via (X1) instead of going through the other NAT on X5.

How can that be adjusted?

Thanks much!

Marek
0
Comment
Question by:maredzki
  • 2
  • 2
  • 2
6 Comments
 
LVL 15

Assisted Solution

by:Perarduaadastra
Perarduaadastra earned 100 total points
ID: 39913736
Just set an outbound rule for SMTP traffic to go out on the X1 interface.

However, if you're running your own mail server you will need to adjust your MX records to include the X1 public IP address, or you'll find that your mailserver gets star billing on numerous RBLs.
0
 
LVL 8

Accepted Solution

by:
N-W earned 400 total points
ID: 39916581
This is more of a routing question because the Sonicwall automatically creates the NAT rules for WAN connections when you initially set them up. All you should need to do is add a static route for the X1 interface.

Login to your management interface, go to Network --> Routing and create a new entry with the following details:

Source: (Your mail server)
Destination: Any
Service: SMTP
Gateway: X1 Default Gateway
Interface: 1
Metric: 1
Disable route when the interface is disconnected: Checked

This will make all outbound SMTP go through X1 (ATT) and will still allow outbound SMTP through X5 (Comcast) in case the X1 WAN link is down.

As Perarduaadastra has mentioned, you will need to change DNS records but this should be a PTR record, not MX. You'll need to contact your ISP for them to change the PTR for your public IP address to something like "mail.mydomain.com".
0
 
LVL 2

Author Closing Comment

by:maredzki
ID: 39917796
Thanks to both of you for the answer.

Marek
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
LVL 2

Author Comment

by:maredzki
ID: 39918398
N-W, in your notes about
Interface: 1
, should that actually say X1?

Marek
0
 
LVL 8

Expert Comment

by:N-W
ID: 39918920
Yes, that should say X1.
0
 
LVL 15

Expert Comment

by:Perarduaadastra
ID: 39918921
N-W, I stand corrected. I should have indeed said that the PTR record needs to be updated, not the MX one.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

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

I found an issue or “bug” in the SonicOS platform (the firmware controlling SonicWALL security appliances) that has to do with renaming Default Service Objects, which then causes a portion of the system to become uncontrollable and unstable. BACK…
Imagine you have a shopping list of items you need to get at the grocery store. You have two options: A. Take one trip to the grocery store and get everything you need for the week, or B. Take multiple trips, buying an item at a time, to achieve t…
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

808 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