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For SpamHaus Zen just send an e-mail to and you will get the results back via e-mail in a few minutes. Some IP Block List providers have test addresses that allow you to see if your block list is working. If you want to delete a provider run Remove-IPBlockListProvider -identity and hit enter.
#List of email providers by spam allowed free
From my experience I like using the free block lists provided by:Īdding the IP Block List provider to Exchange is very simple, just open up the Exchange Management Shell and run the command below:Īdd-IPBlockListProvider -Name SpamHaus -LookupDomain -AnyMatch $True -Enabled $True -RejectionResponse “Your IP is on the block list“įor other block list providers just modify the Name, LookupDomain and RejectionRespose.Īfter you add a IP block list provider you can run get-ipblocklistprovider to list all installed. The best part about Gmail is that it’s free and user-friendly. Also known as real-time block lists (RBL), they are provided by a number of non-profit and for profit companies. It’s an insanely popular ESP (Email Service Provider) by Google. This component checks senders against known databases of spammers, infected computers and open relays. Spam filters can be triggered for a variety of reasons, causing your email to skip recipients inboxes and land straight in their spam inbox.
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One easy way to make a huge dent in the amount of spam your Exchange organization receives is to configure the IP Block List Providers anti-spam agent.