Block spam and junk TLDs

I seem to be noticing a growing amount of spam from TLDs like .work and review. Some are getting blocked in out spam system, but some still seem to get through. Right now I block TLDs (like .work) when they cause an issue, but it seems that the issue pops up later again with different domains after some amount of time. We also have a mechanism in place for blocking snowshoe spam so it's not an issue there.
I was just wondering how other people are handling this as it becomes a problem. We're also using several blacklists, greylisting and other tests on Exchange using Vamsoft ORF. Any thoughts? I've noticed that this is an issue on other systems as well...
This topic first appeared in the Spiceworks Community

Hi,
I recommend you select different agents depending on the junk mails type to achieve your goals.
1.Sender Filter agent   
2.Recipient Filter agent 
3.Sender ID agent   
4.Content Filter agent   
5.Protocol Analysis agent
The following article for your reference:
Anti-Spam Protection
Hope it helps!
Thanks.
Niko Cheng
TechNet Community Support

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