Christos Polydorou

The Set-Mailbox cmdlet has two parameters to configure forwarding for a mailbox: ForwardingAddress and ForwardingSmtpAddress. Those two parameters serve the same puspose but in two different ways. There is also a third parameter called DeliverToMailboxAndForward that when set will leave a copy of the message on the mailbox. The "ForwardingAddress" accepts RecipientIdParameter input which means that you have to use the identity of an existing object on your organization such as another mailbox or a mail contact. The "ForwardingSmtpAddress" accepts input in a proxy address format such as plain old email addresses. Although this is pretty straight forward, there's a catch you need to be aware of. This will only work if the remote domain of the recipient is configured to allow message forwarding. Let me elaborate. There's a thing on Exchange, called Remote Domains . Those are used in order to define settings for the communication between your Exchange ser...

Today I would like to talk a bit about the Active Directory attributes related with mail flow on Exchange server. There are five settings on an exchange recipient that control mail flow (represented by the name of the Powershell parameter of the relative cmdlets): AcceptMessagesOnlyFrom AcceptMessagesOnlyFromDLMembers RejectMessagesFrom RejectMessagesFromDLMembers RequireAllSendersAreAuthenticated Let's examine them one by one! AcceptMessagesOnlyFrom When this is set, the recipient will only be able to receive messages from the specified recipients. Corresponding AD attribute: "authOrig". AcceptMessagesOnlyFromDLMembers Same as above but for the members of the specified DLs. The relative AD attribute is "dLMemSubmitPerms". RejectMessagesFrom When this is set, messages from the specified recipients will be rejected. The AD attribute behind this setting is "unauthOrig". RejectMessagesFromDLMembers Same as above but for the members o...