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Outbound Exchange 2010 through Ironport C370

Posted on 2011-10-29
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Last Modified: 2012-08-22
Gents, i have a exchange 2010 environment that works fine internally and can receive email externally just fine through ironport c370. problem is it i cant seem to get it to send email through the ironport device. I've checked all the places i know of to set for allowing it to relay email for the exchange server, but i am getting the below NDR in outlook from exchange.

The following organization rejected your message: email01.xxx.org (ironport fqdn)

Diagnostic information for administrators:

Generating server: xxx.xxx.local (fqdn of one of the cas servers)

me@att.net (my outside test address)
email01.xxx.org #553 #5.1.8 Domain of sender address <someone@xxx.org> does not exist (MTA, cas server.xxx.local, with IP address, x.x.x.x). ##

the send connector on the cas server is routing mail through the smart host mechanism of course...redundant ironports so i got one in there by ip and one by fqdn. since i'm using the smarthost route, i'm not using dns mx records of any kind, but i've been seeing some postings with that as an additional setting as well. i know i'm missing something, but i'm just missing it here...need help fairly quick as organization cant send right now. its a new install, by the book. shut down old groupwise server and would prefer not to turn it back on before the weekend is over.  

btw the cas servers are in an cas array and i used both the cas array ip and the individual cas server ip in the relay section on the ironport and still nothing. any suggestions are greatly appreciated.
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Question by:blackprophet69
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Expert Comment

by:Shabarinath Ramadasan
ID: 37052478
Can you check if your hub server ip is allowed to relay emails to ironport?
If  its there, from your hub serer, initiate a telnet session on smtp port and try sending a mail to our test address?

Good luck
Shaba
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Accepted Solution

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blackprophet69 earned 0 total points
ID: 37458936
I forgot this was open, but it was an ironport setting. I ended up calling support and we got it.
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Author Closing Comment

by:blackprophet69
ID: 37478745
I figured it out.
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Expert Comment

by:bigz71
ID: 38320347
What was the setting?  I'm having the same issue and support is not really helping!
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