Microsoft on-premises server product that runs Office Online.
Hi @RaGau
Thank you for posting your question in Microsoft Q&A.
Based on the information you shared, I understand that your domain is hosted with WIX and has been moved to Microsoft 365, and your Google Workspace business email was expected to migrate to M365. While Outlook on the web works correctly and shows your emails and shared mailboxes, when you try to add the account to the Outlook desktop app or the Outlook app on iPhone, it automatically detects and pulls the Google account instead.
Based on my research and experience, this issue is most commonly caused by DNS Autodiscover records or leftover Google Workspace DNS records that were not fully removed during the migration. Even if you have already removed Google’s MX records, Google Workspace typically leaves additional DNS records behind. Outlook relies heavily on Autodiscover, and if even one Google-related record still exists, Outlook will be redirected to Google automatically.
I recommend checking the following DNS records with your domain provider (WIX):
-Review and remove any Google-related records. Look for records such as:autodiscover (CNAME or SRV), mail (CNAME), any CNAME or TXT records pointing to google.com, googlemail.com, or ghs.google.com
If any of these still point to Google, Outlook will always detect the account as a Google mailbox.
-Verify Microsoft 365 Autodiscover records: Ensure that Autodiscover is correctly configured for Microsoft 365 and not overridden by an old Google record.
-Stop Google Workspace synchronization: During migration, there is a required step to stop synchronization with Gmail / Google Workspace. Please reffer the following document:
Migrate Google Workspace mailboxes to Microsoft 365 or Office 365
After correcting DNS records, allow sufficient time for DNS changes to propagate before testing again.
Please check the instructions here: Connect your DNS records at Wix to Microsoft 365
I hope this information helps point you in the right direction.
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