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How to enable Relay for authorized users?
Hello everyone, I am running Exchange 2003 behind ISA 2004 and have external users connecting via outlook from unknown IP addresses on the internet. They can receive mail but are unable to send mail (550 5.7.1 Unable to relay for xxx) to anyone except internal users in our domain. I have...- Martinator2000
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- Replies: 2
- Forum: Microsoft: Exchange
