Receiptent Email Address Changes AFTER Email is Sent - ONLY in OWA

Matt 1

We have one person in our organization that is having this problem. When she sends the email to a specific email address, she enters the address manually, it shows correctly in the To field and she hits send. After it's sent, she looks in her Sent folder and the address is changed to the recipient's old email address.

This issue is ONLY occurring in OWA, and can confirm it happens in multiple browsers. The issue does NOT occur in the Outlook client, only OWA.

In the Outlook client we had her click the "Empty Auto-Complete List" because we couldn't find that option in OWA. Had her log out of OWA and log back in and the issue persists.

We also had her clear her browser cache and checked if there were any entries in her personal address book, and there's not.
I found this post. But, it doesn't appear to have been resolved: https://learn.microsoft.com/en-us/answers/questions/907036/outlook-changes-the-email-recipient-address-after.html

Any help would be greatly appreciated.

Thanks,
Matt

KyleXu-MSFT 26,211 Reputation points

2022-11-24T01:35:27.52+00:00
@Matt

To narrow down this one, I want to confirm with you:

Which mail server that you used?

Is this recipient an internal or external mailbox?

If you send emails to the "new" email address, whether emails could be sent the correct recipient?

I would suggest you check whether this recipient is added as Contact in that mailbox.

If this recipient is an internal mailbox, check on the email address for this mailbox from the admin center. Check whether this "new" emails address configured for this mailbox.
KyleXu-MSFT 26,211 Reputation points

2022-11-28T06:42:07.37+00:00

I am writing here to confirm with you any update about this thread now. If this issue still exist, could you provide detailed information to us for narrowing down this one?