The idea:

When communicating amongst our own staff via email we'd like to see our display names in this format:

Firstname Lastname (Division/Department/Branch/Unit)

Whereas, when we send emails to people outside the company, we'd like to be seen as:

Firstname Lastname (Company Name)

Is this technically possible?

Regards,

Anthony

Hello Anthony,

I think is not the right forum.

By the way, you can use FIM to calculate the displayName in AD, like you want it :)

Regards,

Please read about Exchange Simple Display Name if you are using Exchange in your environment. It should be suitable for your needs, but as far I know not every Exchange version support it.

In Exchange 2003 this Simple Display Name was at Advanced tab of user, but now..

With Exchange 2013, SimpleDisplayName is configured using Exchange Management Shell (EMS)

Example:
Set-Mailbox ALIAS -SimpleDisplayName $True

..and as with Exchange 2007/2010, you will need to enable UseSimpleDisplayName on RemoteDomain.

Alternatively you can use a tool named SelectiveSenderName.