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Exchange 2010 and SMTP

Posted on 2010-08-12
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Last Modified: 2012-06-27
Good afternoon,

I am having issues with sending SMTP from an outside source.  Essentially I am trying to relay messages from an outside source to our internal Exchange 2010 server.

MS Remote Connectivity Analyzer results:
Performing Sender ID validation
  Sender ID validation performed successfully
   Test Steps
   ExRCA is attempting to find the SPF record using a DNS TEXT record query.
  ExRCA wasn't able to find the SPF record.
   Additional Details
  No records were found.

Telnet error:
554 5.7.1 This message has been blocked because the HELO/EHLO domain is invalid.

Cert details:
We only have only outside facing cert on the server.  owa.domain.com.  MX records point to mail.domain.com.  

I've changed the receive connector several times to different values.  The default connector is set to owa.domain.com.  Thinking out loud here...MX resolves to mail.domain.com and RDNS resolves to mail.domain.com.  Our cert is set for owa.domain.com.
 
 
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Question by:jjl505
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4 Comments
 
LVL 2

Expert Comment

by:alro613
ID: 33422778
have you tried creating a second MX record for owa.domain.com with a smaller metric.. like metric 5
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Accepted Solution

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jjl505 earned 0 total points
ID: 33506571
Turns out it was a firewall issue.  The policy was too strict...
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LVL 74

Expert Comment

by:Glen Knight
ID: 34679794
This question has been classified as abandoned and is being closed as part of the Cleanup Program. See my comment at the end of the question for more details.
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