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If you want to rotate to the second selector, your options are a) let the Office 365 service rotate the selector and upgrade to 2048-bitness within the next 6 months, or b) after 4 days and confirming that 2048-bitness is in use, manually rotate the second selector key by using the appropriate cmdlet listed above. Choose from thousands of free Microsoft Office templates for every event or occasion. Jump start your school, work, or family project and save time with a professionally designed Word, Excel, PowerPoint template that’s a perfect fit.

Summary: This article describes how you use DomainKeys Identified Mail (DKIM) with Office 365 to ensure that destination email systems trust messages sent outbound from your custom domain.

You should use DKIM in addition to SPF and DMARC to help prevent spoofers from sending messages that look like they are coming from your domain. DKIM lets you add a digital signature to outbound email messages in the message header. It may sound complicated, but it's really not. When you configure DKIM, you authorize your domain to associate, or sign, its name to an email message by using cryptographic authentication. Email systems that receive email from your domain can use this digital signature to help determine if incoming email that they receive is legitimate.

Basically, you use a private key to encrypt the header in your domain's outgoing email. You publish a public key to your domain's DNS records that receiving servers can then use to decode the signature. They use the public key to verify that the messages are really coming from you and not coming from someone spoofing your domain.

Office 365 automatically sets up DKIM for its initial 'onmicrosoft.com' domains. That means you don't need to do anything to set up DKIM for any initial domain names (for example, litware.onmicrosoft.com). For more information about domains, see Domains FAQ.

You can choose to do nothing about DKIM for your custom domain too. If you don't set up DKIM for your custom domain, Office 365 creates a private and public key pair, enables DKIM signing, and then configures the Office 365 default policy for your custom domain. While this is sufficient coverage for most Office 365 customers, you should manually configure DKIM for your custom domain in the following circumstances:

• You have more than one custom domain in Office 365

• You're going to set up DMARC too (recommended)

• You want control over your private key

• You want to customize your CNAME records

• You want to set up DKIM keys for email originating out of a third-party domain, for example, if you use a third-party bulk mailer.

In this article:

How DKIM works better than SPF alone to prevent malicious spoofing in Office 365

SPF adds information to a message envelope but DKIM actually encrypts a signature within the message header. When you forward a message, portions of that message's envelope can be stripped away by the forwarding server. Since the digital signature stays with the email message because it's part of the email header, DKIM works even when a message has been forwarded as shown in the following example.

In this example, if you had only published an SPF TXT record for your domain, the recipient's mail server could have marked your email as spam and generated a false positive result. The addition of DKIM in this scenario reduces false positive spam reporting. Because DKIM relies on public key cryptography to authenticate and not just IP addresses, DKIM is considered a much stronger form of authentication than SPF. We recommend using both SPF and DKIM, as well as DMARC in your deployment.

The nitty gritty: DKIM uses a private key to insert an encrypted signature into the message headers. The signing domain, or outbound domain, is inserted as the value of the d= field in the header. The verifying domain, or recipient's domain, then use the d= field to look up the public key from DNS and authenticate the message. If the message is verified, the DKIM check passes.

Manually upgrade your 1024-bit keys to 2048-bit DKIM encryption keys

Since both 1024 and 2048 bitness are supported for DKIM keys, these directions will tell you how to upgrade your 1024-bit key to 2048. The steps below are for two use-cases, please choose the one that best fits your configuration.

1. When you already have DKIM configured, you rotate bitness as follows:
   1. Connect to Office 365 workloads via PowerShell. (The cmdlet comes from Exchange Online.)
   2. And then execute the following cmdlet:

Rotate-DkimSigningConfig -KeySize 2048 -Identity {Guid of the existing Signing Config}

1. Or for a new implementation of DKIM:
   1. Connect to Office 365 workloads via PowerShell. (This is an Exchange Online cmdlet.)
   2. Execute the following cmdlet:

New-DkimSigningConfig -DomainName {Domain for which config is to be created} -KeySize 2048 -Enabled $True

Stay connected to Office 365 to verify the configuration.

2. Execute the cmdlet:

Get-DkimSigningConfig | fl

Tip

This new 2048-bit key takes effect on the RotateOnDate, and will send emails with the 1024-bit key in the interim. After four days, you can test again with the 2048-bit key (that is, once the rotation takes effect to the second selector).

If you want to rotate to the second selector, your options are a) let the Office 365 service rotate the selector and upgrade to 2048-bitness within the next 6 months, or b) after 4 days and confirming that 2048-bitness is in use, manually rotate the second selector key by using the appropriate cmdlet listed above.

Steps you need to do to manually set up DKIM in Office 365

To configure DKIM, you will complete these steps:

Publish two CNAME records for your custom domain in DNS

For each domain for which you want to add a DKIM signature in DNS, you need to publish two CNAME records.

Run the following commands to create the selector records:

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Create CNAMEs referenced in Get-DkimSigningConfig output

Office 365 performs automatic key rotation using the two records that you establish. If you have provisioned custom domains in addition to the initial domain in Office 365, you must publish two CNAME records for each additional domain. So, if you have two domains, you must publish two additional CNAME records, and so on.

Use the following format for the CNAME records.

Important

If you are one of our GCC High customers, we calculate domainGuid differently! Instead of looking up the MX record for your initialDomain to calculate domainGuid, instead we calculate it directly from the customized domain. For example, if your customized domain is 'contoso.com' your domainGuid becomes 'contoso-com', any periods are replaced with a dash. So, regardless of what MX record your initialDomain points to, you'll always use the above method to calculate the domainGuid to use in your CNAME records.

Where:

• For Office 365, the selectors will always be 'selector1' or 'selector2'.

• domainGUID is the same as the domainGUID in the customized MX record for your custom domain that appears before mail.protection.outlook.com. For example, in the following MX record for the domain contoso.com, the domainGUID is contoso-com:

• initialDomain is the domain that you used when you signed up for Office 365. Initial domains always end in onmicrosoft.com. For information about determining your initial domain, see Domains FAQ.

For example, if you have an initial domain of cohovineyardandwinery.onmicrosoft.com, and two custom domains cohovineyard.com and cohowinery.com, you would need to set up two CNAME records for each additional domain, for a total of four CNAME records.

Note

It's important to create the second record, but only one of the selectors may be available at the time of creation. In essence, the second selector might point to an address that hasn't been created yet. We still recommended that you create the second CNAME record, because your key rotation will be seamless and you won't need to do any manual steps yourself.

Enable DKIM signing for your custom domain in Office 365

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Once you have published the CNAME records in DNS, you are ready to enable DKIM signing through Office 365. You can do this either through the Microsoft 365 admin center or by using PowerShell.

To enable DKIM signing for your custom domain through the admin center

1. Sign in to Office 365 with your work or school account.

2. Select the app launcher icon in the upper-left and choose Admin.

3. In the lower-left navigation, expand Admin and choose Exchange.

4. Go to Protection > dkim.

5. Select the domain for which you want to enable DKIM and then, for Sign messages for this domain with DKIM signatures, choose Enable. Repeat this step for each custom domain.

To enable DKIM signing for your custom domain by using PowerShell

1. Connect to Exchange Online PowerShell.

2. Run the following command:

   Where domain is the name of the custom domain that you want to enable DKIM signing for.

   For example, for the domain contoso.com:

To Confirm DKIM signing is configured properly for Office 365

Wait a few minutes before you follow these steps to confirm that you have properly configured DKIM. This allows time for the DKIM information about the domain to be spread throughout the network.

• Send a message from an account within your Office 365 DKIM-enabled domain to another email account such as outlook.com or Hotmail.com.

• Do not use an aol.com account for testing purposes. AOL may skip the DKIM check if the SPF check passes. This will nullify your test.

• Open the message and look at the header. Instructions for viewing the header for the message will vary depending on your messaging client. For instructions on viewing message headers in Outlook, see View e-mail message headers.

  The DKIM-signed message will contain the host name and domain you defined when you published the CNAME entries. The message will look something like this example:

• Look for the Authentication-Results header. While each receiving service uses a slightly different format to stamp the incoming mail, the result should include something like DKIM=pass or DKIM=OK.

To configure DKIM for more than one custom domain in Office 365

If at some point in the future you decide to add another custom domain and you want to enable DKIM for the new domain, you must complete the steps in this article for each domain. Specifically, complete all steps in What you need to do to manually set up DKIM in Office 365.

Disabling the DKIM signing policy for a custom domain in Office 365

Disabling the signing policy does not completely disable DKIM. After a period of time, Office 365 will automatically apply the default Office 365 policy for your domain. For more information, see Default behavior for DKIM and Office 365.

To disable the DKIM signing policy by using Windows PowerShell

1. Connect to Exchange Online PowerShell.

2. Run one of the following commands for each domain for which you want to disable DKIM signing.

   For example:

   Or

   Where number is the index of the policy. For example:

Default behavior for DKIM and Office 365

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If you do not enable DKIM, Office 365 automatically creates a 1024-bit DKIM public key for your default domain and the associated private key which we store internally in our datacenter. By default, Office 365 uses a default signing configuration for domains that do not have a policy in place. This means that if you do not set up DKIM yourself, Office 365 will use its default policy and keys it creates in order to enable DKIM for your domain.

Also, if you disable DKIM signing after enabling it, after a period of time, Office 365 will automatically apply the Office 365 default policy for your domain.

In the following example, suppose that DKIM for fabrikam.com was enabled by Office 365, not by the administrator of the domain. This means that the required CNAMEs do not exist in DNS. DKIM signatures for email from this domain will look something like this:

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In this example, the host name and domain contain the values to which the CNAME would point if DKIM-signing for fabrikam.com had been enabled by the domain administrator. Eventually, every single message sent from Office 365 will be DKIM-signed. If you enable DKIM yourself, the domain will be the same as the domain in the From: address, in this case fabrikam.com. If you don't, it will not align and instead will use your organization's initial domain. For information about determining your initial domain, see Domains FAQ.

Set up DKIM so that a third-party service can send, or spoof, email on behalf of your custom domain

Some bulk email service providers, or software-as-a-service providers, let you set up DKIM keys for email that originates from their service. This requires coordination between yourself and the third-party in order to set up the necessary DNS records. No two organizations do it exactly the same way. Instead, the process depends entirely on the organization.

An example message showing a properly configured DKIM for contoso.com and bulkemailprovider.com might look like this:

In this example, in order to achieve this result:

1. Bulk Email Provider gave Contoso a public DKIM key.

2. Contoso published the DKIM key to its DNS record.

3. When sending email, Bulk Email Provider signs the key with the corresponding private key. By doing so, Bulk Email Provider attached the DKIM signature to the message header.

4. Receiving email systems perform a DKIM check by authenticating the DKIM-Signature d=<domain> value against the domain in the From: (5322.From) address of the message. In this example, the values match:

   sender@contoso.com

   d=contoso.com

Next steps: After you set up DKIM for Office 365

Although DKIM is designed to help prevent spoofing, DKIM works better with SPF and DMARC. Once you have set up DKIM, if you have not already set up SPF you should do so. For a quick introduction to SPF and to get it configured quickly, see Set up SPF in Office 365 to help prevent spoofing. For a more in-depth understanding of how Office 365 uses SPF, or for troubleshooting or non-standard deployments such as hybrid deployments, start with How Office 365 uses Sender Policy Framework (SPF) to prevent spoofing. Next, see Use DMARC to validate email in Office 365. Anti-spam message headers includes the syntax and header fields used by Office 365 for DKIM checks.

MS Office 2016 Filehippo replaced the previous office suites 2013 and Office for mac 2011, and preceding Office 2019. MS Office is an iconic ‘franchise’ and phenomenal Office productivity suite of The Microsoft Inc. version of the Microsoft Office For both platforms. It was released on macOS on July 9, 2015, and on Microsoft Windows on September 22, 2015, for Office 365 subscribers.

Some new features added in Filehippo ms office 2016, now you can create, open, edit and save files located in the cloud directly from your desktop, a new search tool, named “Tell Me”, which uses new intelligent commands, available for Word, PowerPoint and Excel, and the ability to write in real-time together with other users connected to Office Online. This is an essential feature for collaboration with team members across different locations and even countries.

Other minor features include Insights, a tool integrated with Bing to obtain information contextualized by the web, new types of Excel charts (such as treemaps, pie charts, cascade charts, box-plots, and histograms), and a data loss prevention (DLP) tool, available for Word, Excel, and PowerPoint.

The graphical interface of Office 2016 remained almost unchanged compared to the previous version, Office 2013. Office 2016 inherits the same Microsoft graphics language that was used in Office 2013 – it is based on a flat graphic interface, albeit with minor changes to the layout to conform to the mobile version of the suite.

Features

Working together just got easier
Office 2016 makes it easier to share documents and work with others at the same time. See others’ edits with coauthoring in Word, PowerPoint, and OneNote. Improved version history lets you refer back to snapshots of a document during the editing process. Share right from your document with a click of a button. Or use the new modern attachments in Outlook—attach files from OneDrive and automatically configure permission without leaving Outlook. Review, edit, analyze, and present your Office 2016 documents across any of your devices—from your PC or Mac to your Windows, Apple®, and Android™ phones and tablets.

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Works for you
Stay on task with Office 64-bit with new, faster ways to achieve the results you want. Simply tell Word, Excel, or PowerPoint what you want to do, and Tell Me will guide you to the command. Smart Lookup uses terms you highlight and other contextual information in the document to deliver search results from the web, all within the document. Use one-click forecasting to quickly turn your historical data into an analysis of future trends. New charts help you visualize complex data.

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Office moves with you
From work to your favorite café, stay connected to what’s important—friends, family, and projects across all of your devices. Use touch for reading, editing, zooming, and navigation. Write notes or make annotations using digital ink. Easily save to your cloud storage and switch from one device to the next without missing a beat. Office apps pick up right where you left off, regardless of the device you were using.

Perfect with Windows 10
Office 2016 plus Windows 10 is the world’s most complete solution for getting things done. Say “Hello” just once and Windows will log you into your PC and Office—all in one simple step. Bring Cortana to your Office to help you get things done. Let Cortana with Office 365 integration help with tasks like meeting prep. Office Mobile apps on Windows 10 are touch-friendly, fast, and optimized for on-the-go-productivity.

Best Office value
Office 365 flexible subscription plans let you pick the option that’s right for you. Choose an individual plan or one for the whole household. Office 365 includes the new Office 2016 apps for PC and Mac, like Microsoft Word, MS Excel, PowerPoint, Outlook, and OneNote. OneDrive keeps you connected to what’s important—friends, family, projects, and files—anywhere, on any device. Need help with Office 2016? Each subscriber to Office 365 gets free tech support from Microsoft-trained experts.

Microsoft Office 2016 Inclusions:

• Microsoft Word: a Word Processor.
• Microsoft Excel: a Spreadsheet.
• Microsoft Powerpoint: a Presentation Program Used to Create Slideshows Composed of Text, Graphics, and Other Objects, Which Can Be Displayed on-screen and Shown by the Presenter or Printed Out on Transparencies or Slides.
• Microsoft Access: a Database Management System for Windows That Combines the Relational Microsoft Jet Database Engine With a Graphical User Interface and Software Development Tools. Microsoft Access Stores Data in Its Own Format Based on the Access Jet Database Engine. It Can Also Import or Link Directly to Data Stored in Other Applications and Databases.

• Microsoft Outlook: a Personal Information Manager That Replaces Windows Messaging, Microsoft Mail, and Schedule+ Starting in Office 97, It Includes an E-mail Client, Calendar, Task Manager and Address Book.
• Microsoft Onenote: a Notetaking Program That Gathers Handwritten or Typed Notes, Drawings, Screen Clippings, and Audio Commentaries. Notes Can Be Shared With Other Onenote Users Over the Internet or a Network.
• Microsoft Publisher: a Desktop Publishing App for Windows Mostly Used for Designing Brochures, Labels, Calendars, Greeting Cards, Business Cards, Newsletters, Web Site, and Postcards
• Skype for Business: an Integrated Communications Client for Conferences and Meetings in Real Time, It Is the Only Microsoft Office Desktop App That Is Neither Useful Without a Proper Network Infrastructure Nor Has the “Microsoft” Prefix in Its Name.
• Microsoft Project: a Project Management App for Windows to Keep Track of Events and to Create Network Charts and Gantt Charts, Not Bundled in Any Office Suite
• Microsoft Visio: a Diagram and Flowcharting App for Windows Not Bundled in Any Office Suite.

MS Office 2016 Filehippo System Requirements

• 1 GHz processor
• 2GB RAM
• 3 GB of available disk space; better to have some extra space for temp files
• Screen resolution of a minimum of 1280 x 800
• Windows 7 SP1 or above operating system; Works best on the latest operating system according to Microsoft
• The browsers used should be the latest versions of the versions immediately preceding the latest versions
• At least .Net 3.5; preferred 4.5 LCR
• A Microsoft account (that naturally has a OneDrive account attached to it).
• Requires .NET Framework.

Office 365 Mac

How to Download and Install MS Office 2016

1. 1. Click on the download button(s) at the tops of this post and finish downloading the required files. This might take from a few minutes to a few hours, depending on your download speed.
   2. Extract the downloaded files.
   3. Before continuing, make sure you have uninstalled and removed all files related to Microsoft Office 2013, 2016 or ms office 2010 filehippo.
   4. Open the “Software Files” and run “Install.exe”. On this window, you can choose if you want x86 or x64 versions, Office ProPlus or Office Standards, the language you want and which Office tools you would like to download.
   5. Select “Install Office” and then select “Ok”. Wait for Office 2016 to finish installing.
   6. Once it is finished, go to the “Utilities” tab and then select “Word”. When they ask you to activate just click exit and then exit out of Microsoft Word.
   7. Next, in the utilities tab select Office RETAIL => VL. Once it finishes (it will say “Completed”) select “Activate Office”.
   8. Once you get the “ACTIVATION SUCCESSFUL” message you’re finished!
   9. You now have the full version of Microsoft Office 2016, without any limitations, installed on your computer.

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See the video tutorial about how to Activate MS Office 2016

Note: Mainstream support ends on October 13, 2020, and extended support ends on October 14, 2025. The perpetually licensed version on macOS and Windows was released on September 22, 2015. Since its successor Office 2019 only supports Windows 10 or Windows Server 2019, this is the last version of Microsoft Office compatible with Windows 7, Windows Server 2008 R2, Windows 8, Windows 8.1, Windows Server 2012, Windows Server 2012 R2, and Windows Server 2016.