We have several domains setup at the moment, but for the sake of simplicity they can be summarised as:
Domain_old2 (Secondary) - Domain_new (alias)
All of the users in Domain_old1 are using MAC and all of the users in Domain_old2 are using PC.
Prior to a recent HW and SW refresh the MAC users were using Entourage, and through config in Kerio Connect and Entourage, ALL users were able to mimic/spoof Domain_new as their sending address.
Now that the MAC users are using Outlook 2016 they can no longer send mail as anything other that Domain_old1.
The question is, whats the best solution to allowing ALL users to send as Domain_new, given that there is no requirement for the to be separated into 2 domains moving forward.
Clearly I want to minimise downtime and disruption, so pure config changes, would be better than more complex migrations where I need to take the server down for an extended period.
My first thought is that I could change Domain_old1 to Domain_new, which would make Domain_new the primary domain and Domain_old1 an alias.
Domain_new (Primary) - Domain_old1 (alias)
Domain_old2 (Secondary) - Domain_new (Alias)
I do not know whether I can then still have Domain_new as an alias for Domain_old2 once it is the primary domain. I assume not.
Therefore, I am guessing that I will have to do that and then migrate the users in Domain_old2 to Domain_new (I have a bookmark to a how to guide for this but as a noob I cannot post the link).
Domain_new (Primary) - Domain_old1 (alias) & Domain_old2 (alias)
Any alternate solutions or thoughts on this would be appreciated.
[Updated on: Tue, 17 October 2017 14:13]
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