We like to do some user acceptance testing with ZCS 5. Therefor we would like to install ZCS 5 parallel to an existing email solution and put 2 users onto Zimbra for testing.
The requirement for this is that the user can use there normal email address and all email is stored in the current system and in ZCS 5 as well.
Is there already a best practice procedure for this?
I though of setting zimbra up as a sub domain and configure the main email server to forward everything for these 2 test accounts to zimbra where I create a always bcc back to the main email server. For outgoing emails I thought using Identities.
Does this sounds reasonable?