Skip to main content

Notifications

Announcements

No record found.

News and Announcements icon
Community site session details

Community site session details

Session Id :
Dynamics 365 Community / Forums / Microsoft Dynamics CRM (Archived) / Error when testing and...
Microsoft Dynamics CRM (Archived)

Error when testing and enabling mailbox

(0) ShareShare
ReportReport
Posted on by Ashraf Abu-Abdou 110

I have tried numerous times to enable my mailbox without any success. Here is the synchronization method:

Incoming Email: Server-side synchronization or Email router

Outgoing Email: Server-side synchronization or Email router

Appointments, Contacts and Tasks: Server-side synchronization

Whenever I try to approve mailbox then test it and enable it, I get the following error:

"

mail cannot be received for the mailbox [My Mailbox]. Make sure that the credentials specified in the mailbox are correct and have sufficient permissions for receiving email. Then, enable the mailbox for email processing.
Email Server Error Code: Http server returned 401 Unauthorized exception"
My email address is exactly the same as the one I log into CRM with : *@*.onmicrosoft.com. And for "Allow to Use Credentials for Email Processing", I chose No.
Any idea why I am getting this error?. What is the solution?
P.S. I have read and tried so many microsoft pages on this error without any success

*This post is locked for comments

  • Community Member Profile Picture
    Community Member on at
    RE: Error when testing and enabling mailbox

    You are right.

    7/10/2017 5:59:34 PM

    Title: Email, OneNote, and SharePoint integration failures User Impact: Affected users may be unable to access emails, SharePoint, and OneNote within Dynamics 365 Current Status: Microsoft Engineers…

  • Ali .NET Profile Picture
    Ali .NET on at
    RE: Error when testing and enabling mailbox

    Same issue with me. Seems this is an issue on Dynamics servers' side.

  • Suggested answer
    Community Member Profile Picture
    Community Member on at
    RE: Error when testing and enabling mailbox

    Hi Anthony, we also have same issue. There is the failure when test & enable all the mailboxes in the email server profile. You have any update on this?

  • Anthony Gentilcore Profile Picture
    Anthony Gentilcore on at
    RE: Error when testing and enabling mailbox

    Hi,  What do you mean by : It seems my Exchange Online was inactive.  I have the same issue at the moment.  Thks

  • Ashraf Abu-Abdou Profile Picture
    Ashraf Abu-Abdou 110 on at
    RE: Error when testing and enabling mailbox

    Ok I solved the problem.

    It seems my Exchange Online was inactive. After I activated it, the problem was resolved

  • Ashraf Abu-Abdou Profile Picture
    Ashraf Abu-Abdou 110 on at
    RE: Error when testing and enabling mailbox

    Yes I am using Exchange Online and I am the only user of this account. I followed before the steps shown on the link you provided but without success. This is really frustrating

  • Suggested answer
    Alagunellaikumar Profile Picture
    Alagunellaikumar 6,210 on at
    RE: Error when testing and enabling mailbox

    Hi

    If it is office 365 account refer below URL

    alagunellaikumar.blogspot.in/.../dynamics-crm-email-server-profile.html

  • Verified answer
    Nadeeja Bomiriya Profile Picture
    Nadeeja Bomiriya 6,804 on at
    RE: Error when testing and enabling mailbox

    Hi Ashraf,

    Can you please provide more information about what you are trying to do?

    I seems you are trying to configure server-side sync with Dynamics CRM Online and another mail server.  Is this mail server Exchange Online in the same tenant?  Or is it Exchange On-Premises?  Or is it another non-exchange mail server?

    Depend on your setup the configuration is different.  If you are using Exchange Online in the same tenant, you don't need to provide credentials.  If you are using non-exchange mail server then there can be other configuration steps you need to perform on that server.

    Since you are using onmicrosoft.com email address I assume you are using Exchange Online on the same tenant.  In that case, you don't need to provide credentials.  But you must be  Global Administrator of the Office 365 tenant.  Follow the steps in below article.

    arunpotti.wordpress.com/.../how-to-configure-email-using-server-side-synchronization-in-crm-2016-online

Under review

Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.

Helpful resources

Quick Links

Daivat Vartak – Community Spotlight

We are honored to recognize Daivat Vartak as our March 2025 Community…

Announcing Our 2025 Season 1 Super Users!

A new season of Super Users has arrived, and we are so grateful for the daily…

Kudos to the February Top 10 Community Stars!

Thanks for all your good work in the Community!

Leaderboard

#1
André Arnaud de Calavon Profile Picture

André Arnaud de Cal... 292,516 Super User 2025 Season 1

#2
Martin Dráb Profile Picture

Martin Dráb 231,436 Most Valuable Professional

#3
nmaenpaa Profile Picture

nmaenpaa 101,156

Leaderboard

Featured topics

Product updates

Dynamics 365 release plans