Set AD User with External Email Address
I am setting up a co-lo for 2 companies in 1 office space. These companies are sister companies but infrastructure has been separated for legal reasons but we are converting into a hybrid office environment where Company A works 2 days at the office, then Company B comes in 2 other days to work in the office. Company B network will be the primary on-site and Company A will be cloud-based. I want to import users from Company A into Company B but instead of having Company B's email addresses I want to call out their email address so any emails will route to their Exchange Server. However, I am running into issues doing this.... If I set their email address as mailto:Email address removed in any of the following attributes email address, ProxyAddress, or mail it fails to route the email to their Exchange server. I ran a message trace on Company A and Company B to track down the email but it does not show on Company A's message trace. On Company B, the message trace says it was delivered. What I found was that Company B's domain assumes it is an internal route even though that domain normaclature does not exist. How can I call out the companyb\user email as mailto:Email address removed? There has to be a way to make this possible. I have a script setup to email users when their passwords are about to expire or MFA passcodes, etc. that creating a mail contact will not be the answer...