SOLVED

Not Able to enable DKIM in Office365 - Online Exchange server

%3CLINGO-SUB%20id%3D%22lingo-sub-1605741%22%20slang%3D%22en-US%22%3ENot%20Able%20to%20enable%20DKIM%20in%20Office365%20-%20Online%20Exchange%20server%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1605741%22%20slang%3D%22en-US%22%3E%3CP%3EI%20have%20been%20trying%20to%20enable%20DKIM%20on%20office365%20since%20a%20couple%20of%20days.%20I%20have%20entered%20all%20the%20require%20CNAME%20entry%20in%20the%20DNS.%20But%20when%20I%20try%20to%20run%20the%20below%20command%20via%20Powershell%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3CSPAN%3ERan%20Powershell%20as%20an%20administrator%20then%20ran%20the%20following%20command%26nbsp%3B%3C%2FSPAN%3E%3C%2FP%3E%3CP%3ESet-ExecutionPolicy%20RemoteSigned%3CBR%20%2F%3E(kindly%20select%20yes%20to%20all%20option%20if%20asked)%3CBR%20%2F%3E%24UserCredential%20%3D%20Get-Credential%3CBR%20%2F%3E(enter%20your%20Global%20admin%20account)%3CBR%20%2F%3E%24Session%20%3D%20New-PSSession%20-ConfigurationName%20Microsoft.Exchange%20-ConnectionUri%20%3CA%20href%3D%22https%3A%2F%2Foutlook.office365.com%2Fpowershell-liveid%2F%22%20target%3D%22_blank%22%20rel%3D%22nofollow%20noopener%20noreferrer%22%3Ehttps%3A%2F%2Foutlook.office365.com%2Fpowershell-liveid%2F%3C%2FA%3E%20-Credential%20%24UserCredential%20-Authentication%20Basic%20-AllowRedirection%3CBR%20%2F%3EImport-PSSession%20%24Session%3CBR%20%2F%3E%3CBR%20%2F%3EOnce%20connected%20to%20Exchange%20online%20ran%20the%20below%20command%3CBR%20%2F%3E%3CBR%20%2F%3E%3CSTRONG%3ESet-DkimSigningConfig%20-Identity%20%22MYDOMAIN%3C%2FSTRONG%3E%3CSPAN%3E%3CSTRONG%3E%22%20-Enabled%20%24true%3C%2FSTRONG%3E%3C%2FSPAN%3E%3C%2FP%3E%3CP%3EI%20am%20getting%20an%20below%20error%20saying%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EThe%20operation%20couldn't%20be%20performed%20because%20object%20'MYDOMAIN'%20couldn't%20be%20found%20on%20'MAXPR01A05DC004.INDPR01A005.PROD.OUTLOOK.COM'.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3CSPAN%3ECan%20someone%20help%20me%20here%26nbsp%3B%3C%2FSPAN%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-1605797%22%20slang%3D%22en-US%22%3ERe%3A%20Not%20Able%20to%20enable%20DKIM%20in%20Office365%20-%20Online%20Exchange%20server%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1605797%22%20slang%3D%22en-US%22%3E%3CP%3EHey%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F767847%22%20target%3D%22_blank%22%3E%40Sumesh1980%3C%2FA%3E%26nbsp%3B%2C%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3ERun%20Get-Accepteddomain%20from%20exchange%20powershell%2C%20check%20if%20you%20are%20able%20to%20see%20the%20domain%20listed%20here.%3C%2FP%3E%3CP%3EVerify%20exchange%20services%20are%20selected%20while%20adding%20the%20domain%2C%20step%205%20in%20the%20following%20article%20%3A%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Fsupport.microsoft.com%2Fen-us%2Foffice%2Fconnect-your-domain-to-office-365-cd74b4fa-6d34-4669-9937-ed178ac84515%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%22%3Ehttps%3A%2F%2Fsupport.microsoft.com%2Fen-us%2Foffice%2Fconnect-your-domain-to-office-365-cd74b4fa-6d34-4669-9937-ed178ac84515%3C%2FA%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EIf%20you%20don't%20see%20the%20domain%20listed%20in%20get-accepteddomain%20%2C%20and%20the%20services%20are%20selected%20that%20would%20mean%20a%20sync%20did%20not%20happen%20AADS%20and%20EXO%3B%20you%20will%20have%20to%20get%20a%20ticket%20going%20with%20MS%20to%20run%20the%20sync.%26nbsp%3B%20Also%2C%20check%20if%20you%20are%20able%20to%20set%20the%20domain%20as%20SMTP%20for%20one%20of%20the%20users%20and%20try%20sending%20out%20a%20test%20email.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EThanks%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-1605802%22%20slang%3D%22en-US%22%3ERe%3A%20Not%20Able%20to%20enable%20DKIM%20in%20Office365%20-%20Online%20Exchange%20server%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1605802%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F67895%22%20target%3D%22_blank%22%3E%40harveer%20singh%3C%2FA%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3CSPAN%3EGet-Accepteddomain%20is%20showing%20my%20domain.%20And%20also%20I%20am%20able%20to%20send%20emails%20that%20were%20configured%20on%20my%20mobile.%26nbsp%3B%3C%2FSPAN%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-1605842%22%20slang%3D%22en-US%22%3ERe%3A%20Not%20Able%20to%20enable%20DKIM%20in%20Office365%20-%20Online%20Exchange%20server%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1605842%22%20slang%3D%22en-US%22%3E%3CP%3EHey%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F767847%22%20target%3D%22_blank%22%3E%40Sumesh1980%3C%2FA%3E%26nbsp%3B%2C%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EOkay%2C%20Just%20tested%20it%2C%20it%20appears%20you%20did%20not%20run%20the%20command%20%3A%3C%2FP%3E%3CP%3ENew-DkimSigni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3C%2FP%3E%3CP%3EIt%20depends%20on%20the%20DNS%20you%20are%20using%20and%20there%20may%20be%20a%20delay%20but%20most%20of%20the%20times%20it%20is%20not%20actually%20the%20DNS%20rather%20incorrectly%20updated%20records.%20The%20common%20mistake%20is%20to%20end%20up%20updating%20domain%20name%20twice%20like%20for%20example%20%3A%3C%2FP%3E%3CP%3E%3CSPAN%3Eselector1._domainkey.domain.com.domain.com%20is%20updated%20as%20the%20CNAME%20instead%20of%20simply%26nbsp%3Bselector1._domainkey.domain.com.%26nbsp%3B%3C%2FSPAN%3E%3C%2FP%3E%3CP%3E%3CSPAN%3EPlease%20follow%20instructions%20related%20to%20your%20DNS%20provider%20only%20to%20update%20the%20records.%20See%20this%20case%20in%20older%20post%3A%3C%2FSPAN%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3CSPAN%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fexchange%2Funable-to-activate-dkim%2Fm-p%2F1540512%22%20target%3D%22_blank%22%3Ehttps%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fexchange%2Funable-to-activate-dkim%2Fm-p%2F1540512%3C%2FA%3E%3C%2FSPAN%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3CSPAN%3EThanks%3C%2FSPAN%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-1606180%22%20slang%3D%22en-US%22%3ERe%3A%20Not%20Able%20to%20enable%20DKIM%20in%20Office365%20-%20Online%20Exchange%20server%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1606180%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F67895%22%20target%3D%22_blank%22%3E%40harveer%20singh%3C%2FA%3EHey%20thanks%20for%20helping%20me%20here.%20I%20was%20able%20to%20fix%20the%20issue.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EThanks%20Buddy%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2024687%22%20slang%3D%22en-US%22%3ERe%3A%20Not%20Able%20to%20enable%20DKIM%20in%20Office365%20-%20Online%20Exchange%20server%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2024687%22%20slang%3D%22en-US%22%3EThanks!%20Solved%20my%20problem!%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2298018%22%20slang%3D%22en-US%22%3ERe%3A%20Not%20Able%20to%20enable%20DKIM%20in%20Office365%20-%20Online%20Exchange%20server%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2298018%22%20slang%3D%22en-US%22%3EGreat.%20It%20solve%20my%20issue%3C%2FLINGO-BODY%3E
Occasional Contributor

I have been trying to enable DKIM on office365 since a couple of days. I have entered all the require CNAME entry in the DNS. But when I try to run the below command via Powershell 

 

Ran Powershell as an administrator then ran the following command 

Set-ExecutionPolicy RemoteSigned
(kindly select yes to all option if asked)
$UserCredential = Get-Credential
(enter your Global admin account)
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection
Import-PSSession $Session

Once connected to Exchange online ran the below command

Set-DkimSigningConfig -Identity "MYDOMAIN" -Enabled $true

I am getting an below error saying 

 

The operation couldn't be performed because object 'MYDOMAIN' couldn't be found on 'MAXPR01A05DC004.INDPR01A005.PROD.OUTLOOK.COM'.

 

Can someone help me here 

8 Replies

Hey @Sumesh1980 ,

 

Run Get-Accepteddomain from exchange powershell, check if you are able to see the domain listed here.

Verify exchange services are selected while adding the domain, step 5 in the following article : https://support.microsoft.com/en-us/office/connect-your-domain-to-office-365-cd74b4fa-6d34-4669-9937...

 

If you don't see the domain listed in get-accepteddomain , and the services are selected that would mean a sync did not happen AADS and EXO; you will have to get a ticket going with MS to run the sync.  Also, check if you are able to set the domain as SMTP for one of the users and try sending out a test email.

 

Thanks

@harveer singh 

Get-Accepteddomain is showing my domain. And also I am able to send emails that were configured on my mobile. 

 

best response confirmed by Sumesh1980 (Occasional Contributor)
Solution

Hey @Sumesh1980 ,

 

Okay, Just tested it, it appears you did not run the command :

New-DkimSigningConfig -DomainName <domain> -Enabled $false before updating the CNAME records.

 

So here are the steps that you need to complete in order to get this working:

1. New-DkimSigningConfig -DomainName <domain> -Enabled $false
2. Get-DkimSigningConfig -Identity <domain> | Format-List Selector1CNAME, Selector2CNAME

 

Grab the CNAMES and update them in DNS.

Then run the command:

Set-DkimSigningConfig -Identity <domain> -Enabled $true

 

After running the command in Step 1, it should not give you the domain not found error.

 

Thanks

@harveer singh 

 

 

Tried adding the CNAME as suggested by you
 
Set-DkimSigningConfig -Identity <domain> | Format-List Selector1CNAME, Selector2CNAME
 
CNAME format was same as below
 
Host name:selector1._domainkey
Points to address or value:    selector1-<domainGUID>._domainkey.<initialDomain>
TTL:3600
 
Host name: selector2._domainkey
Points to address or value: selector2-<domainGUID>._domainkey.<initialDomain>
TTL: 3600
 
But I am getting error as below
 
CNAME record does not exist for this config. Please publish the following two CNAME records first.
 
selector1-DOMAIN-com._domainkey.initialDomain.onmicrosoft.com
selector2-DOMAIN-com._domainkey.initialDomain.onmicrosoft.com
    + CategoryInfo          : InvalidOperation: (:) [Set-DkimSigningConfig], Exception
    + FullyQualifiedErrorId : [Server=BMXPR01MB2423,RequestId=7a956dda-cf6e-4c60-b2b3-a50ac94264f0,TimeStamp=8/22/2020
    7:49:41 PM] [FailureCategory=Cmdlet-Exception] 3BEB77E9,Microsoft.Exchange.Management.SystemConfigurationTasks.Se
  tDkimSigningConfig
    + PSComputerName        : outlook.office365.com
 
 
Does it take time to CNAME to propogate it internet ?
 

 

 

@Sumesh1980 

It depends on the DNS you are using and there may be a delay but most of the times it is not actually the DNS rather incorrectly updated records. The common mistake is to end up updating domain name twice like for example :

selector1._domainkey.domain.com.domain.com is updated as the CNAME instead of simply selector1._domainkey.domain.com. 

Please follow instructions related to your DNS provider only to update the records. See this case in older post:

 

https://techcommunity.microsoft.com/t5/exchange/unable-to-activate-dkim/m-p/1540512

 

Thanks

@harveer singhHey thanks for helping me here. I was able to fix the issue.

 

Thanks Buddy

Thanks! Solved my problem!
Great. It solve my issue