Yes, you can use Powershell to export Office 365 span filter allow and block list to a csv. Here are some examples:
Export blocked domain name list:
Get-HostedContentFilterPolicy | select -ExpandProperty BlockedSenderDomains | Select-Object @{Name=’Domain’;Expression={$_}} | Export-Csv .\blockeddomains.csv -NoType
Export bloced senders list
Get-HostedContentFilterPolicy | select -ExpandProperty BlockedSenders | Select-Object @{Name=’Domain’;Expression={$_}} | Export-Csv .\blockedsenders.csv -NoType
Export allow senders lsits
Get-HostedContentFilterPolicy | select -ExpandProperty AllowedSenders | Select-Object @{Name=’Domain’;Expression={$_}} | Export-Csv .\allowed.csv -NoType
Export allow domain name list
Get-HostedContentFilterPolicy | select -ExpandProperty AllowedSenderDomains | Select-Object @{Name=’Domain’;Expression={$_}} | Export-Csv .\alloweddomains.csv -NoType
Note: you may login remotely first:
Set-ExecutionPolicy RemoteSigned
Install-Module -Name ExchangeOnlineManagement
Import-Module ExchangeOnlineManagement
Connect-ExchangeOnline -UserPrincipalName blin@chicagotech.net
