Slow performance when executing cmdlets through Powershell from a management server

Question

We are trying to execute some management cmdlets to manage our distribution groups. We have a server having the Exchange Management Tools installed, not hosting any other Exchange Server roles. The command works well from an exchange server. When executing for example set-distributiongroup it takes some minutes to execute the command. It succeeds eventually . When running the command within a few minutes after the first try, it works fast. But when waiting for 5 or 6 minutes, it is slow again.

I ran the command with the verbose option, below you will find the output. The bold part is taking so long. This part is skipped when executing the command for the second time within some minutes:

Set-DistributionGroup <group-emailaddress> -AcceptMessagesOnlyFrom @{add=“<user-emailaddress>”} -verbose

VERBOSE: [13:03:12.395 GMT] Set-DistributionGroup : Runspace context: Executing user:

<executinguser>, Executing user organization: , Current

organization: , RBAC-enabled: Disabled.

VERBOSE: [13:03:12.399 GMT] Set-DistributionGroup : Active Directory session settings for

'Set-DistributionGroup' are: View Entire Forest: 'True',

VERBOSE: [13:03:12.399 GMT] Set-DistributionGroup : Beginning processing Set-DistributionGroup

VERBOSE: [13:03:12.406 GMT] Set-DistributionGroup : Instantiating handler with index 0 for cmdlet

extension agent "Rus Agent".

VERBOSE: [13:03:12.406 GMT] Set-DistributionGroup : Instantiating handler with index 1 for cmdlet

extension agent "Admin Audit Log Agent".

VERBOSE: [13:03:12.423 GMT] Set-DistributionGroup : Current ScopeSet is: { Recipient Read Scope:{{,

}}, Recipient Write Scopes:{{, }}, Configuration Read Scope:{{, }}, Configuration Write

Scope(s):{{, }, }, Exclusive Recipient Scope(s):{}, Exclusive Configuration Scope(s):{} }

VERBOSE: [13:03:12.431 GMT] Set-DistributionGroup : Searching objects

"<group-emailaddress>" of type "ADGroup" under the root "$null".

VERBOSE: [13:03:12.437 GMT] Set-DistributionGroup : Previous operation run on global catalog server

‘<GCserver>’.

VERBOSE: [13:03:12.437 GMT] Set-DistributionGroup : Rereading object

“<groupadobject>” of type "ADGroup" under the root

“<cngroupadobject>“.

VERBOSE: [13:03:12.437 GMT] Set-DistributionGroup : Previous operation run on domain controller

‘<DC>’.

VERBOSE: [13:03:12.437 GMT] Set-DistributionGroup : Searching objects

“<useremailaddress>“ of type "ADRecipient" under the root "$null".

VERBOSE: [13:03:12.453 GMT] Set-DistributionGroup : Previous operation run on global catalog server

'<GCserver>'.

VERBOSE: [13:03:12.453 GMT] Set-DistributionGroup : [Microsoft Cmdlet Extension Agent] Update

Recipient object “<recipientadobject>“ with

ConfigurationDomainController "<null>", DomainController "<DC>”, GlobalCatalog

"<null>".

VERBOSE: [13:03:12.453 GMT] Set-DistributionGroup : [Microsoft Cmdlet Extension Agent] Read Address

List for organization "" from domain controller <DC>.

VERBOSE: [13:03:12.462 GMT] Set-DistributionGroup : [Microsoft Cmdlet Extension Agent] Found

Address List "\".

VERBOSE: [13:03:12.462 GMT] Set-DistributionGroup : [Microsoft Cmdlet Extension Agent] Found

Address List "\".

VERBOSE: [13:03:12.462 GMT] Set-DistributionGroup : [Microsoft Cmdlet Extension Agent] Found

Address List "\Default Global Address List".