?
Solved

Excahnge 2007 Can't Receive Some Internet E-mail

Posted on 2011-10-31
5
Medium Priority
?
185 Views
Last Modified: 2012-05-12
We have a single Exchange 2007 server behind a Barracuda Spam/Firewall.

Today we had problems with our Barracuda and I had to bypass it while I get it fixed. I wanted to route incoming internet e-mail directly to the Exchange 2007 server. Not ideal, but we need our e-mail.

So I go into our Firewall and change the routing. I replaced the IP address of our Barracuda with the IP address of our Exchange server. Then I sent myself an e-mail from my gmail account, got it and thought I was good to go.

Not so fast. While some outside e-mail is coming in, not all of it is. What am I missing? One solution said I should check our DNS configuration. I did and made a change there.

It used to use our internal Primary/Backup DNS servers. But at one suggestion I changed that tour our internal Primary DNS, and our ISPs primary DNS. That didn't work.

Thanks,
Rob
0
Comment
Question by:LTIADMIN
  • 3
5 Comments
 
LVL 18

Expert Comment

by:LesterClayton
ID: 37059753
Hm.  If you've just merely changed the IP forwarding from the baracuda appliance to your exchange server, then DNS MX records should not need changing.  Did you however allow your router's IP address to be an authorized relay?  Previously, you would have had a connector for your Baracuda appliance. Because the mail is coming from a different source IP, is this potentially a part of the issue?
0
 

Author Comment

by:LTIADMIN
ID: 37060124
Thanks. I've set that and will see how it goes.

Any idea why it would have let some external e-mail through, even without that, and not others?
0
 
LVL 9

Expert Comment

by:sirakov
ID: 37060158
If not all emails are comming in and you checked your receive connectors ...
Did you enabled Anti-Spam Functionality on your Hub Transport Server ? Any Sender Filtering ?
0
 

Accepted Solution

by:
LTIADMIN earned 0 total points
ID: 37147375
None of these seemed to help but we were able to get the Barracuda working again. Thanks for your help.
0
 

Author Closing Comment

by:LTIADMIN
ID: 37169503
Canelling Request
0

Featured Post

Veeam and MySQL: How to Perform Backup & Recovery

MySQL and the MariaDB variant are among the most used databases in Linux environments, and many critical applications support their data on them. Watch this recorded webinar to find out how Veeam Backup & Replication allows you to get consistent backups of MySQL databases.

Question has a verified solution.

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

As much as Microsoft wants to kill off PST file support, just as they tried to do with public folders, there are still times when it is useful or downright necessary to export Exchange mailboxes to PST files. Thankfully, it is still possible to e…
Stellar Exchange Toolkit: this 5 in 1 toolkit comes loaded with mega-software tool. Here’s an introduction to tools’ usage and advantages:
This video shows how to quickly and easily deploy an email signature for all users in Office 365 and prevent it from being added to replies and forwards. (the resulting signature is applied on the server level in Exchange Online) The email signat…
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the admini…
Suggested Courses

862 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