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Server 2003 & Exchange Server 2003 - Removing Barracuda 200 Spam Filter / Can send outgoing mail but not receive incoming mail?

Posted on 2014-07-26
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Last Modified: 2014-08-01
When we shut off barracuda spam filter device all outgoing mail works however incoming  mail does not? I have checked exchange settings, dns records on the server from top to bottom and have not found anything that points to the barracuda device. When I open telnet and type in mail.domain.com 25, it says
220 barracuda.ourdomainname.com) ESMTP (d3bb5396e085a7dd0413fb4fc0e4ef6d)??

Thanks!
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Question by:Rolando Ramos
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Author Comment

by:Rolando Ramos
ID: 40221501
MXTool box - SMTP Test Reports

220 barracuda.ourdomainname.com) ESMTP (d3bb5396e085a7dd0413fb4fc0e4ef6d)??

Test      Result      
      SMTP TLS      Warning - Does not support TLS.       More Info      
      SMTP Reverse DNS Mismatch      OK - Reverse DNS matches SMTP Banner      
      SMTP Connection Time      1.950 seconds - Good on Connection time      
      SMTP Open Relay      OK - Not an open relay.      
      SMTP Transaction Time      3.947 seconds - Good on Transaction Time
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Expert Comment

by:Nyaema
ID: 40221586
when you ping mail.domain.com, what IP is returned?
Does this IP belong to the exchange server? confirm and cross check the IPs on the exchange server.
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Author Comment

by:Rolando Ramos
ID: 40221594
When i type in mail.domain.com, it returns the outside IP address where the exchange server is located at the office.
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Expert Comment

by:Nyaema
ID: 40221609
What Private IP is that that Public IP NATed to?  The Network Address Translation needs to Map port 25 on your firewall/router to the private ip and port on your mail server.  Sounds like your Baracuda is still the smtp recipient server.  When you say you say shut if off, what exactly do you mean? Pulled one network cable off??
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Author Comment

by:Rolando Ramos
ID: 40221696
no we powered it down as soon as we did all incoming email stopped, outgoing mail works just fine. The moment we power it back on emails begin to flow again.
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Accepted Solution

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Nyaema earned 500 total points
ID: 40221737
You still haven't answered my questions...
What Private IP and Port is the port on that Public IP in question mapped to?  And what device is on that private IP?
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Author Comment

by:Rolando Ramos
ID: 40221766
I don't have access to there system to find out I will have find out on Monday.
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Author Comment

by:Rolando Ramos
ID: 40235414
They had a WatchGuard firebox that was redirection port 25 to the barracuda spam filter, redirected port 25 to the IP address of the exchange server and issue was resolved.
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