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mardahl/gist:8e22c5ca71f95cb616a45f0db36bc78c

Last active October 7, 2020 12:26
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Create exchange send connector for relaying through exchange online protection
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gistfile1.ps1
#This script will create a send connector that can relay through exchange online protection in Office 365
#Must be run from the on prem Exchange Management Shell
#WARNING: This will use the wildcard * for sending, so please consider changing "addressSpaces" to some testing domains, so you know this works before routing everything.
#WARNING: You must remove your existing internet send connector if you wish for this to work with 100% of all email.
#Author: @michael_mardahl (github.com/mardahl)
#License: MIT - please keep author credits.
$hybridConnector = Get-SendConnector *365*
$smartHost = Resolve-DnsName $hybridConnector.AddressSpaces.Address -Type MX
New-SendConnector -Name EOP-Smarthost -AddressSpaces * -CloudServicesMailEnabled $true -Fqdn $hybridConnector.Fqdn -RequireTLS $true -DNSRoutingEnabled $false -SmartHosts $smartHost.NameExchange -TlsAuthLevel CertificateValidation -Usage Internet -TlsCertificateName $hybridConnector.TlsCertificateName
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