Members of a Distribution List group are not receiving emails sent

Question

We have a DL which was originally created in AD on-prem with three users as a members of this group and migrated to Exchange online . When tried to send email to DL group i am not getting any error but email is not delivered to any of these members of this group.

Answer 1

"By default, the ReportToManagerEnabled parameter is set to False and the ReportToOriginatorEnabled parameter is set to True when a distribution group is created in Exchange Online. When the parameters are both set to False, remote messaging system will not send delivery reports to the user who sent the message to the distribution group.

In-order to check this and correct, Login with your Global Admin/Exchange Online Admin credentials and execute the following PowerShell command

Get-DistributionGroup <email address> | fl

Verify the ReportToOriginatorEnabled parameter is True/False. If False, following command should help to resolve the issue:

Set-DistributionGroup <email address> -ReportToOriginatorEnabled $true

Make sure that the settings take effect too by running : Get-DistributionGroup <email address> | fl

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Answer 2

Hi @SY_MSO

Could you please share the complete result you get running the command below, note to clear your personal information

Get-DistributionGroup DL01@domain.com | fl  

And according to your information, can you receive the message send directly to you? But not through a distribution group?

Please also check the message trace for the mail you send to the DL.

The official document here introduces about Distribution group issues for your reference as well.

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Answer 3

Hello ,

So the issue is we have changed to new cloud tenant recently. Since then we are unable to receive emails only when we create a DG in on-prem and migrate it to EXO .when i directly create a DG in EAC i am able to receive emails.

And according to your information, can you receive the message send directly to you? Yes , i am able to receive emails and send. The issue is only with DG

Answer 4

Hello,

Please find the output below.

PS C:\> Get-DistributionGroup -identity "DLO1@keyman .com" | FL

RunspaceId : 1e32cbcb-0e94-4609-aa58-31c7089d2ac7
GroupType : Universal
SamAccountName : $BKG2V0-83ON3VU3HAJ9
BypassNestedModerationEnabled : False
IsDirSynced : True
ManagedBy : {Organization Management}
MemberJoinRestriction : Closed
MemberDepartRestriction : Closed
MigrationToUnifiedGroupInProgress : False
HiddenGroupMembershipEnabled : False
ExpansionServer :
ReportToManagerEnabled : False
ReportToOriginatorEnabled : False
SendOofMessageToOriginatorEnabled : False
Description : {}
BccBlocked : False
AcceptMessagesOnlyFrom : {}
AcceptMessagesOnlyFromDLMembers : {}
AcceptMessagesOnlyFromSendersOrMembers : {}
AddressListMembership : {\Offline Global Address List, \All Distribution Lists, \Groups(VLV), \All
Groups(VLV)...}
AdministrativeUnits : {}
Alias : Receiving
ArbitrationMailbox : SystemMailbox{bb558c35-97f1-4cb9-8ff7-d53741dc928c}
BypassModerationFromSendersOrMembers : {}
OrganizationalUnit : nampr03a900.prod.outlook.com/Microsoft Exchange Hosted
Organizations/asm365.onmicrosoft.com
CustomAttribute1 :
CustomAttribute10 :
CustomAttribute11 :
CustomAttribute12 :
CustomAttribute13 :
CustomAttribute14 :
CustomAttribute15 :
CustomAttribute2 :
CustomAttribute3 :
CustomAttribute4 :
CustomAttribute5 :
CustomAttribute6 :
CustomAttribute7 :
CustomAttribute8 :
CustomAttribute9 :
ExtensionCustomAttribute1 : {}
ExtensionCustomAttribute2 : {}
ExtensionCustomAttribute3 : {}
ExtensionCustomAttribute4 : {}
ExtensionCustomAttribute5 : {}
DisplayName : Receiving
EmailAddresses : {SMTP:Receiving1@keyman .com, smtp:Receiving@asm365.onmicrosoft.com,
X500:/o=First Organization/ou=First Administrative
Group/cn=Recipients/cn=Recipients/cn=Receiving}
GrantSendOnBehalfTo : {}
ExternalDirectoryObjectId : e7e8931b-2438-4a37-b877-7a7db519eae0
HiddenFromAddressListsEnabled : False
LastExchangeChangedTime :
LegacyExchangeDN : /o=ExchangeLabs/ou=Exchange Administrative Group
(FYDIBOHF23SPDLT)/cn=Recipients/cn=2a1bae63d8d044d49ee0b11dc9f8e29f-Receiving
MaxSendSize : Unlimited
MaxReceiveSize : Unlimited
ModeratedBy : {}
ModerationEnabled : False
PoliciesIncluded : {}
PoliciesExcluded : {{26491cfc-9e50-4857-861b-0cb8df22b5d7}}
EmailAddressPolicyEnabled : False
PrimarySmtpAddress : Receiving1@keyman .com
RecipientType : MailUniversalDistributionGroup
RecipientTypeDetails : MailUniversalDistributionGroup
RejectMessagesFrom : {}
RejectMessagesFromDLMembers : {}
RejectMessagesFromSendersOrMembers : {}
RequireSenderAuthenticationEnabled : False
SimpleDisplayName :
SendModerationNotifications : Always
UMDtmfMap : {emailAddress:7323484641, lastNameFirstName:732348464,
firstNameLastName:732348464}
WindowsEmailAddress : Receiving1@keyman .com
MailTip :
MailTipTranslations : {}
Identity : Receiving
Id : Receiving
IsValid : True
ExchangeVersion : 0.10 (14.0.100.0)
Name : Receiving
DistinguishedName : CN=Receiving,OU=asm365.onmicrosoft.com,OU=Microsoft Exchange Hosted
Organizations,DC=NAMPR03A900,DC=PROD,DC=OUTLOOK,DC=COM
ObjectCategory : NAMPR03A900.PROD.OUTLOOK.COM/Configuration/Schema/Group
ObjectClass : {top, group}
WhenChanged : 12/20/2021 1:30:54 PM
WhenCreated : 12/20/2021 1:20:19 PM
WhenChangedUTC : 12/20/2021 7:30:54 PM
WhenCreatedUTC : 12/20/2021 7:20:19 PM
ExchangeObjectId : 2e548ef2-5a21-4f61-8c37-b13e18fd033f
OrganizationalUnitRoot : asm365.onmicrosoft.com
OrganizationId : NAMPR03A900.PROD.OUTLOOK.COM/Microsoft Exchange Hosted
Organizations/asm365.onmicrosoft.com - NAMPR03A900.PROD.OUTLOOK.COM/ConfigurationUnits/asm365.onmicrosoft.com/Configuration
Guid : 2e548ef2-5a21-4f61-8c37-b13e18fd033f
OriginatingServer : B______________C03.NAMPR03A900.PROD.OUTLOOK.COM
ObjectState : Changed