When you try to set up a new mail account for Office 365 by using the Add New Account Wizard in Microsoft Outlook, your Outlook profile isn't automatically set up. Additionally, you receive the following error message when Outlook tries to set up the server settings for your profile:
An encrypted connection to your mail services is not available
When you test by using the Microsoft Remote Connectivity Analyzer, the following error may be returned:
Autodiscover cannot process the given e-mail address. Only mailboxes and contacts are allowed.
This problem occurs for one of the following reasons:
The wrong email address was entered on the Auto Account Setup page of the Add New Account Wizard in Outlook.
The required updates for Outlook to automatically connect to Exchange Online aren't installed for the version of Outlook that you're running.
The Autodiscover CNAME record for your domain doesn’t exist or isn’t set up correctly.
In organizations that use Active Directory synchronization, the mail, mailNickname, displayName, and proxyAddresses attributes are not set up correctly for the synced user in the on-premises Active Directory.
Note This article discusses Outlook 2016, Outlook 2013, and Exchange Online. For help in connecting to Exchange Online from a mobile device, see Set up and use Office 365 on your phone or tablet. For help in connecting Outlook to a third-party service, contact your third-party mail provider.
Method 1: Run Office 365 Support and Recovery Assistant
If Method 1 doesn't resolve the problem, and you're using a custom domain with Office 365, use the following methods in the order in which they're listed. If the first method doesn't resolve the problem, go to the next one.
Method 2: Upgrade to the latest version of Outlook
First, make sure that you enter the correct email address and password on the Auto Account Setup page of the Add New Account Wizard in Outlook.
Note If this method doesn’t resolve the problem, go to Method 3.
Method 3: Make sure that the Autodiscover CNAME record is set up correctly
The Autodiscover CNAME record must exist and must be set up correctly. We strongly recommend that you set up Exchange Autodiscover when you are using Outlook to connect to Exchange Online mailboxes. Setting up Autodiscover and other related DNS records is required for Outlook connectivity in Exchange Online. Administrators can use the Domain Troubleshooting Wizard in Office 365 or Microsoft Remote Connectivity Analyzer to confirm that the records are set up correctly.
Use the Domain Troubleshooting Wizard in Office 365
To use the Domain Troubleshooting Wizard in Office 365, follow these steps.
If you have an Exchange hybrid deployment, set up the Autodiscover public DNS records for your existing SMTP domains to point to an on-premises Exchange server. For more information, see Hybrid deployment prerequisites.
Method 4: Make sure that the user's attributes in Active Directory are set correctly
You can use the Get-RemoteMailbox cmdlet to determine the whether the following attributes are set correctly for the user. Common issues occur when a value is not set for one or more of these attributes. The following is an example of the correct attributes.
After the correct values are set for these attributes, force directory synchronization to occur, and then try to set up the user's email account in Outlook.
If you're not using a custom domain
Method 2: Use the Add New Account Wizard in Outlook
If Method 1 doesn't resolve the problem, and you’re not using a custom domain together with Office 365, you can use the Add New Account Wizard in Outlook to set up your Outlook profile by using the default "onmicrosoft.com"-based email address that’s associated with users’ Exchange Online mailboxes when you signed up for Office 365. When you use the Add New Account Wizard to set up a new mail profile, you specify your Office 365 password and your default Office 365 email address in the form of <user>@<domain>.onmicrosoft.com (for example, firstname.lastname@example.org).
This method is supported and works for customers who may not plan to have their own vanity or custom domain. This method also supports Autodiscover. If your mailbox server location changes, Outlook is updated accordingly by using the new location of your mailbox server.
Microsoft doesn't support manually setting up a profile in Outlook for connectivity to mailboxes in Exchange Online in Office 365. However, we can help you complete other tasks, such as setting up DNS and Autodiscover records (as discussed in Method 2). This lets you set up your account through the supported methods.