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o365-spam-policy.ps1
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o365-spam-policy.ps1
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<# CIAOPS
Script provided as is. Use at own risk. No guarantees or warranty provided.
Crowd source settings for filtering - http://blog.ciaops.com/2018/06/spam-filtering-in-office-365best.html
Source - https://github.com/directorcia/Office365/blob/master/o365-spam-policy.ps1
Description - Configure a new Exchange Online spam filtering policy
Prerequisites = 1
1. Ensure Exchange online PowerShell module installed or updated
More scripts available by joining http://www.ciaopspatron.com
#>
## Variables
$systemmessagecolor = "cyan"
$processmessagecolor = "green"
## Separate multiple domains with comma (,) e.g."domain1.com", "domain2.com", "domain3.com"
$domains = "M365B555418.onmicrosoft.com"
$policyname = "Configured Policy"
$rulename = "Configured Recipients"
## If you have running scripts that don't have a certificate, run this command once to disable that level of security
## set-executionpolicy -executionpolicy bypass -scope currentuser -force
Clear-Host
write-host -foregroundcolor $systemmessagecolor "Script started'n"
write-host -foregroundcolor $processmessagecolor "Set new spam policy"
$policyparams = @{
"name" = $policyname;
'Bulkspamaction' = 'movetojmf';
'bulkthreshold' = '7';
'highconfidencespamaction' = 'movetojmf';
'inlinesafetytipsenabled' = $true;
'markasspambulkmail' = 'on';
'increasescorewithimagelinks' = 'off'
'increasescorewithnumericips' = 'on'
'increasescorewithredirecttootherport' = 'on'
'increasescorewithbizorinfourls' = 'on';
'markasspamemptymessages' ='on';
'markasspamjavascriptinhtml' = 'on';
'markasspamframesinhtml' = 'on';
'markasspamobjecttagsinhtml' = 'on';
'markasspamembedtagsinhtml' ='on';
'markasspamformtagsinhtml' = 'on';
'markasspamwebbugsinhtml' = 'on';
'markasspamsensitivewordlist' = 'on';
'markasspamspfrecordhardfail' = 'on';
'markasspamfromaddressauthfail' = 'on';
'markasspamndrbackscatter' = 'on';
'phishspamaction' = 'movetojmf';
'spamaction' = 'movetojmf';
'zapenabled' = $true
}
new-hostedcontentfilterpolicy @policyparams
write-host -foregroundcolor $processmessagecolor "Set new filter rule"
$ruleparams = @{
'name' = $rulename;
'hostedcontentfilterpolicy' = $policyname; ## this needs to match the above policy name
'recipientdomainis' = $domains;
'Enabled' = $true
}
New-hostedcontentfilterrule @ruleparams
write-host -foregroundcolor $systemmessagecolor "Script completed`n"