Email issues after adding new domain
I'm still pretty new to the Microsoft 365 Admin Center and I was wondering if anyone has had an issue where they add a new domain for a company that was already using 365 but they changed their name and wanted a new domain to go with the name change. I run a small independent IT shop and I am receiving reports from my customers that when they send out emails to their clients, the clients are reporting that they never received any email. The clients have also checked their spam folders to make sure it didn't end up there, to no avail. Before changing over to the new domain and email address this was not an issue.
Ideas?
Thank you in advance.
- Best run some message traces, they should give you a clue as to what's happening: https://docs.microsoft.com/en-us/exchange/monitoring/trace-an-email-message/message-trace-modern-eac
Also, make sure that you have configured SPF for your domain as a minimum, and preferably DKIM/DMARC as well. https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/set-up-spf-in-office-365-to-help-prevent-spoofing?view=o365-worldwide
