troubleshooting Question

Urgent:Exchange 2007 Not Sending Email

Avatar of cheto06
cheto06 asked on
ExchangeActive Directory
10 Comments2 Solutions593 ViewsLast Modified:
All this is urgent please help. While applying patches tonight I rebooted my exchange 2007 server and now I don't seem to be able to send messages to certain outside domains.

Delivery has failed to these recipients or distribution lists:
User One
Your message wasn't delivered because of security policies. Microsoft Exchange will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator.

The following organization rejected your message: nlpi136.prodigy.net.
Sent by Microsoft Exchange Server 2007

Diagnostic information for administrators:

Generating server: server-v.domain.com
user@sbcglobal.net
nlpi136.prodigy.net #550 5.7.1 Connections not accepted from servers without a valid sender domain.nlpi136 Fix reverse DNS for 38.104.195.22 ##
ASKER CERTIFIED SOLUTION
suriyaehnop

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