I am using MS Exchange 2003 SP3 behind of Firewall. Now I am looking to block spam. I have already enabled Connection Filtering as well as Intelligent Message Filtering on SMTP. Also I have enabled Recipient Filtering. I have also added 3 Block List providers and now I wanted to configure those list so that it could become Global Allow List.
After doing lots of research work I have concluded that I need to configure Perimeter IP List and Internal IP Range so that everything would work without having any issue. I am not having much idea regarding Perimeter IP List. I don’t know whether I will need to add external IP address on my router. I found somewhere that there was conflict of Connection Filtering was happening. I have configured subnet ID and mask on General of message Delivery Properties. Any useful information on this particular matter will be highly appreciated. Thanks a lot in advance.
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