Forum Discussion
Auto Email for Decommission Server
Hi Hi, My Microsoft Exchange version is 2013 for my current domain. I am changing my domain to 365 and my email address will be my new name. I need support after I decommissioned the current 2013...
Dan_Snape can you advice the steps how can we implement it
You add both your new domain and your old domain as custom domains to the M365 tenant. The new domain is the primary SMTP address for the mailbox while the old domain is a secondary SMTP address for the mailbox...then point you MX record to Exchange online. Mail is then received in the mailbox for both SMTP addresses, but sent out as the primary SMTP address only.