Solutions Through IT

August 18, 2013

Blocking Entire Domains (e.g. facebook.com or linkedin.com)

Filed under: Exchange — solutionsthroughit @ 20:14

Had a reason to block an entire domain from sending an exchange 2007 server emails. To add just a single domain, you can use the command:

Set-SenderFilterConfig –BlockedDomain “blockeddomain.com”

To add multiple domains, you will need to create a text file (say C:\Temp\blockedDomains.txt) and have a line entry for each domain that you want to have blocked.  You can then issue:

Set-SenderFilterConfig –BlockedDomain (Get-Content C:\Temp\BlockedDomains.txt)

which will add all the domains listed into the block list.

Finally you can issue a

Get-SenderFilterConfig | Select BlockedSenders | fl

or

Get-SenderFilterConfig | Select BlockedSenders | Out-File C:\Temp\BlockConfig.txt

to view the domains that are actively being blocked (the second line creating a text file.

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