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Outside emails take a long time to receive

Posted on 2013-11-08
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Last Modified: 2014-04-01
We have SBS 2008 with Exchange Server 2007.  Outgoing emails to outside the organization recipients are being sent and received without a problems.  Incoming emails from outside the organization are not.  The receiver eventually receives them but hours after it was sent.  I ran Microsoft Remote Connectivity test for incoming emails from an outside source and found that when the Windows Firewall, it failed the test pointing to a firewall issue.  I turned off the Windows Firewall and got connectivity.  When I try to email from another outside email, it sends but the intended receiver still doesn't get the email until several hours after it is sent.  I thinking it is something internal that is causing the problem but not sure what it is.  Any insight would be helpful.
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Question by:Tlingit
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Cris Hanna earned 500 total points
ID: 39635192
How many network cards in the SBS 2008 server
Can you post the ipconfig /all from the server?
Have you installed the Best Practice Advisor for SBS 2008?
Have you run the "Fix My Network" wizard?
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by:Tlingit
ID: 39639374
I ran Fix My Network wizard.  It was unable to fix my router.  I made sure all possible ports that it suggested were open, ie, 80, 443, 987, and of course 25.  What would be causing this issue.
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by:Cris Hanna
ID: 39639502
Very few routers are truly plug and play which is what is required for the wizard to be able to configure your router...this is very common

Actually Port 80 should be closed...not required
Would still like to have answers to other questions
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by:Tlingit
ID: 39639565
Very few routers are truly plug and play which is what is required for the wizard to be able to configure your router...this is very common

Yes, I understand.  I thought this would be the reason why it's not configuring the router.

It is also saying it is missing the cname in DNS.  I know I need to put this the forward lookup section, under the *.local folder, but what name should I put to it?
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by:Cris Hanna
ID: 39639570
What cname does it say it's missing?
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by:Tlingit
ID: 39639768
It doesn't say what cname it is?  It just says it is missing.
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by:Tlingit
ID: 39969958
It was the Barracuda Firewall and Spam Filter that was causing the delays in emails.  I pointed all incoming emails directly to the Exchange server bypassing the Barracuda.  Now the emails are coming through fast.
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by:Cris Hanna
ID: 39969976
Wow...so did you remove the Barracuda unit from the networks?
What's acting as your firewall now?
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by:Tlingit
ID: 39970137
We have Eset and using their firewall.
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by:Cris Hanna
ID: 39970271
I realize the question is closed but I would suggest putting the Barracuda device back in place, if only just for the firewall.   It's going to be far superior protection to the software firewall in ESET.   Then contact Barracuda about the long delay on Email delivery
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