Hi LongLyH,
Have you completely verified custom domain in Office 365? If not, you can use TXT record to verify it.
If yes, you don't need to add the MX record until you want to use it.
Regards,
Jerry Cen
Hi LongLyH,
Have you completely verified custom domain in Office 365? If not, you can use TXT record to verify it.
If yes, you don't need to add the MX record until you want to use it.
Regards,
Jerry Cen