Exchange Relais anonyme pour copieur scanner
https://docs.microsoft.com/fr-fr/Exchange/mail-flow/connectors/allow-anonymous-relay?view=exchserver-2019
New-ReceiveConnector -Name "Anonymous Relay" -TransportRole FrontendTransport -Custom -Bindings 0.0.0.0:25 -RemoteIpRanges 192.168.5.10,192.168.5.11
Set-ReceiveConnector "Anonymous Relay" -PermissionGroups AnonymousUsers
Get-ReceiveConnector "Anonymous Relay" | Add-ADPermission -User "NT AUTHORITY\ANONYMOUS LOGON" -ExtendedRights "Ms-Exch-SMTP-Accept-Any-Recipient"
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Get-ReceiveConnector "Anonymous Relay" | Add-ADPermission -User "ANONYMOUS LOGON" -ExtendedRights "Ms-Exch-SMTP-Accept-Any-Recipient"
Set-ReceiveConnector "RelaisAnonyme" -AuthMechanism ExternalAuthoritative -PermissionGroups ExchangeServers
ou
Créer un connecteur Frontal personalisé "RelaisAnonyme" avec TLS coché et Sécurité extérieur et Serveurs Exchange via l'interface ECP
Puis authoriser le relais anonyme via ce connecteur
Set-ReceiveConnector "RelaisAnonyme" -PermissionGroups AnonymousUsers
Get-ReceiveConnector "RelaisAnonyme" | Add-ADPermission -User "ANONYMOUS LOGON" -ExtendedRights "Ms-Exch-SMTP-Accept-Any-Recipient"
Set-ReceiveConnector "RelaisAnonyme" -AuthMechanism ExternalAuthoritative -PermissionGroups ExchangeServers
Il faut redémarrer le service transport .