Hi Everyone:

Due to the issue of Microsoft Outlook client, some customers send us email with a random mail address that we can not reply.

This is a real example:


This problem will cause we can’t contact with customer and can’t help them. The worst things is, customer maybe thinking we don’t care about him. Actually, the truth is we really care about our customer, but we can’t get in touch with him.

So if you are using OUTLOOK, please check this support article and make sure you have the right mail address.

We also append the issue and soluation below.


After connecting to Outlook for Windows (Outlook 2016, 2013, 2010 versions) to your  Outlook.com  email account, your may experience the following:

Your email account name shows up as outlook_[long series of letters and numbers]@outlook.com in the Folder Pane and when composing emails using Outlook for Windows.

Recipients will also receive the email from the sender with the outlook_[long series of letters and numbers]@outlook.com format.

When recipients reply to the email, the email bounces and you may receive the message “Undeliverable message when you send Internet mail in Outlook.”

This issue only impacts customers using Outlook for Windows. Emails sent via  Outlook.com  on the web works correctly and emails will be sent with the correct email address.



This issue occurs for users with multiple account aliases. We are actively working on a fix. In the meantime, to fix this issue, please do the following:

1. Go to  https://account.live.com/names/Manage  and sign in to your  Outlook.com  account.

2 .Set your  Outlook.com  email as the primary alias.

3. In Outlook for Windows, remove and re-add the account. See the steps in this article: Add your  Outlook.com  account in Outlook for Windows



11 Responses to Warning! Outlook email address BUG!!
  1. Avatar

    I visited multiple web pages except the audio feature for audio songs existing at
    this website is really excellent.


  2. Avatar

    Could you PLEASE PLEASE PLEASE create a video tutorial for Mac users running Catalina, FOR doing backups and future software updates for the AISAIRPRO … It appears that there is no video tutorial .. ( there is only one video tutorial on you tube and it doesn’t work ) ( you have one for windows user, but not for mac users. ) There is a problem with Apple pie baker in Macs Catalina software.. really need a visual tutorial to follow that works.
    some people like myself are visual learners.. and not computer savvy..

    would be forever grateful.. otherwise I will be selling all my gear that took months to acquire.

    Sincerely, Cathleen Edick


  3. Avatar

    What is the best way to learn about the order status? I emailed info@zwoptical.com but I got no reply so far.


    • Avatar

      Currently, we are having a lot of emails, please wait for a while, I will also convey your message to the related department, thank you for your supporting!


  4. Avatar

    We have an order for one of your ASI6200MM-P cameras with OPT, https://optcorp.com since March 25, 2020. OPT has informed us they are waiting for shipments.

    On your web site this item is still on back-order. Can you please let us know when you will begin shipping this item to resellers/distributors?


    • Avatar

      Sorry to you for waiting shipments, our production department is working hard to produce ASI6200MM Pro, and we will shipping this item to resellers/distributors once we have enough ASI6200MM Pro.


  5. Avatar


    How much will shipping be to South Africa?
    Approx ETA?

    Kind Regards


  6. Avatar


    I would like to know when the camera ASI183 mono will be available.
    Thank you for your reply.




Leave a Reply