Custom Email Policy not working, need to bulk edit email addresses

[Mr_M_Cox]

Hello,

 

I am currently working on an exchange server with around 20 users. Each user has a number of different email addresses, first name, initials, both etc.

 

I now need to replicate all email addresses but change the domain name of each whilst keeping the original intact and just adding the new ones. So, as an example I need [email protected] to become [email protected] but without losing the 1.com address.

 

I have tried creating a custom mail policy but it will not seem to do anything, wont even create the new policy, let alone action it.

 

Here is the code I am using -

 

>> New-EmailAddressPolicy -Name "Domain Swap" -IncludeRecipients AllRecipients -E

nabledPrimarySMTPAddressTemplates "SMTP: %g.@*****.net"

 

My plan was to use this with a different naming convention each time but if there is an easier way to attack this please suggest.

 

any advice would be great, thanks.