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Exchange 2016 server slow to send mail (currently internal only)

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Hi guys,

On a client's server we currently have an Exchange 2016 set up in a clients office. The issue is that it's very slow to send mail, it took one hour to send mail yesterday.

Any ideas?

Tuesday, February 21, 2017 7:48 AM

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Hello

if sending email from owa its slow ?

please share result for one message

Get-MessageTrackingLog -Server exchserver -EventID DELIVER -ResultSize unlimited|where {$_.MessageLatency -gt "00:40:00.0000000"} |fl *laten*, *time*, sender, *rec*, *info*

sorry my english

Tuesday, February 21, 2017 8:04 PM
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Hi,

Thanks for contacting our forum. How about receiving emails?

Does this issue affect all of the users or specific users（or on specific DB ）?

Were the messages stuck in Outbox or in the transport queues? You can check with the command get-queue.

Have you checked the Event log? Were there any back pressure related events, such as 15004, 15005, etc.

And please confirm that is it slow on both OWA and Outlook.

Thanks for your effort.

Regards,

Jason Chao

Please remember to mark the replies as answers if they help.
If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.
- Edited by Jason.Chao Wednesday, February 22, 2017 9:59 AM
Wednesday, February 22, 2017 7:15 AM
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Message sent from OWA and Outlook is slow

Here is a result from on of the messages with the names changed slightly to protect the clients name
MessageLatency : 01:03:16.7140000
MessageLatencyType : EndToEnd
Timestamp : 20/02/2017 01:00:01 PM
Sender : Administrator@company.co.za
Recipients : {stan@company.co.za}
RecipientStatus : {}
RecipientCount : 1
RelatedRecipientAddress :
Directionality : Originating
MessageInfo : 2017-02-20T09:56:44.569Z;SRV=UNFFS008.company.co.za:TOTAL-SUB=3487.016|SA=3486.990|MTS
S-PEN=0.026(MTSSD-PEN=0.026(MTSSDA=0.003|MTSSDC=0.005|SDSSO-PEN=0.009 (SMSC=0.005|MTSSDM-PEN=
0.004)));SRV=UNFFS008.company.co.za:TOTAL-HUB=309.520|SMR=0.652(SMRDI=0.004|SMRC=0.648
(SMRCL=0.647))|CAT=0.056(CATSM=0.005(CATSM-Malware Agent=0.005 )|CATRS=0.044(CATRS-Index
Routing Agent=0.043))|QDM=2.782|CAT=0.010(CATRESL=0.005 )|QDM=306.020(QDMUN=305.995);SRV=UNFF
S008.company.co.za:TOTAL-DEL=0.187|SMR=0.011(SMRDI=0.010)|SDD=0.157(SDDCC=0.006|SDDOS=
0.017|SDDPM=0.028(SDDPM-Mailbox Rules Agent=0.022|SDDPM-Index Delivery
Agent=0.003)|SDDCMM=0.001|SDDR=0.101|X-SDDAD=0.003|X-SDDS=0.082)

Wednesday, February 22, 2017 8:30 AM
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Hi,

Issue affects all users, at the moment the send connect is set up for just sending internal mail. Messages from the OWA would stay in drafts for awhile before they'd just all send at one time, same sort of thing with outlook but it stays in the sent folder for awhile before sending at what I assume is the same time as the OWA.

The get-queue command shows that there's one message in the smarthost but this doesn't increase when I send more mails so I'm not sure if that's possibly an issue.

Nothing seems to be picking up in Event Viewer.

One more thing, it seems there's got to be something delaying the message cause yesterday from 2:30 pm to sometime before 4:00 pm the mails were sending instantly.

Hope this helps

Wednesday, February 22, 2017 8:49 AM
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Hi,

Thanks for your response. Do you have any backup software or any other software deployed?

Do you mean the message mails are sending instantly now? Just in the time period you mentioned above the messages were delayed.

If this issue still exist, it’s recommended to enable the intraOrg connector and mailbox delivery connector log to check the detailed information as below:

Use this procedure to enable or disable protocol logging on the implicit and invisible intra-organization Send connector that exists in the Transport service, the Front End Transport service, and the Mailbox Transport Submission service on Mailbox servers.

Set-TransportService Mailbox01 -IntraOrgConnectorProtocolLoggingLevel Verbose

Use this procedure to enable or disable protocol logging on the implicit and invisible mailbox delivery Receive connector that exists in the Mailbox Transport Delivery service.

Set-MailboxTransportService Mailbox01 -MailboxDeliveryConnectorProtocolLoggingLevel Verbose

Check in the following path:

%ExchangeInstallPath%TransportRoles\Logs\Mailbox\ProtocolLog\SmtpSend\Submission

%ExchangeInstallPath%TransportRoles\Logs\Mailbox\ProtocolLog\SmtpReceive\Delivery

Hope it helps.

Regards,

Jason Chao

Please remember to mark the replies as answers if they help.
If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.
- Edited by Jason.Chao Wednesday, February 22, 2017 9:57 AM
Wednesday, February 22, 2017 9:56 AM
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Hi,

The mails are still slow, they were only instant in the times I listed

The server only has Exchange 2016 installed

Tried setting up the logging using the commands but the logs don't appear to have been created.

Thanks
- Edited by SupportZA Wednesday, February 22, 2017 10:52 AM
Wednesday, February 22, 2017 10:48 AM
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Hello

haven't got any virusscan, mail scan cisco router ?
sorry my english

Wednesday, February 22, 2017 5:58 PM
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Hi,

Afraid we don't have any anti-viruses on the machine or a Cisco router

Regards
- Edited by SupportZA Thursday, February 23, 2017 7:42 AM
Thursday, February 23, 2017 6:57 AM
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Hello

c:\Program Files\Microsoft\Exchange Server\V16\Scripts> .\convertto-messagelatency.ps1

plese share output:

Get-MessageTrackingLog -Server exchserver -EventID DELIVER -ResultSize unlimited|where {$_.MessageLatency -gt "00:40:00.0000000"}| .\convertto-messagelatency.ps1
sorry my english

Thursday, February 23, 2017 8:49 PM
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Hi,

It’s recommended to refer to the following blog:

https://blogs.technet.microsoft.com/messaging_with_communications/2011/04/22/how-to-track-message-in-exchange-200320072010/

Please also to make sure if the latency issue still occurring now.

Hope it helps.
Regards,

Jason Chao

Please remember to mark the replies as answers if they help.
If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

Friday, February 24, 2017 8:42 AM