Hi Experts,
Recently I setup an Exchange 2016 server with Edge Transport server. I configured the IP Block List Providers, and reject emails from Exchange hosted domain (eg. the domain hosted in exchange is myabc.com, I use Set-SenderFilterConfig to block myabc.com. Because internal emails shall be sent to server via SMTPS port 587). all settings are done in Edge Transport Server. However, I still can receive some SPAM mails.
I checked the sender IP from the Agent Log in Edge Transport server, the IP is in the blacklist of IP Block List Provider (eg. spamcop.net). But in the Agent Log, I can see it bypass the IP Block List Providers check up.
All emails' FROM are hosted domain (eg. @myabc.com), which I expect it shall be rejected by Sender Filter Config. However, it actually doesn't work.
I am not sure how these SPAM mails bypass the filters in Edge Transport server. What else shall I do to prevent it?
Our community of experts have been thoroughly vetted for their expertise and industry experience.
The Most Valuable Expert award recognizes technology experts who passionately share their knowledge with the community, demonstrate the core values of this platform, and go the extra mile in all aspects of their contributions. This award is based off of nominations by EE users and experts. Multiple MVEs may be awarded each year.
The Expert of the Year award recognizes an expert who helped improve Experts Exchange in the past year through high levels of contributions and participation on site. This award is given to the expert who has achieved the highest levels of participation, while maintaining quality contributions and professionalism.