Not able to send/receive notification via External Email source SCOM 2019

Question

Afternoon,

This is very frustrating, cannot seem to understand what is happening here. I had been using a normal smtp channel that uses anonymous/no pwd. However, this is dropping numerous notifications, so I need to switch. The one I am trying to switch to has to use SSL/TLS.

I setup the required elements via this URL: https://learn.microsoft.com/en-us/archive/blogs/direnconen/sending-notifications-with-external-email-authentication

and this one: https://learn.microsoft.com/en-us/system-center/scom/manage-notifications-create-configure?view=sc-om-2019

did not get any errors along the way. I can use this PS script to check that the account I am using can send emails.

$msolcred = get-credential
Send-MailMessage –From address@mydomain –To address@mydomain –Subject “Test Email Last” –Body “Test Text Last” -SmtpServer xx-xxx.mail.protection.outlook.com -Credential $msolcred -UseSsl -Port 25

When the credentials box pops up I enter the email account to be used and the pwd for it. The email gets sent fairly quickly to my email account.

Error in SCOM:

Notification subsystem failed to send notification using device/server 'servername. xxx.xxx.xxx' over 'Smtp' protocol to 'myemailaddress@Piepel .xxx'. Microsoft.EnterpriseManagement.HealthService.Modules.Notification.SmtpNotificationException: Failure sending mail. --> Unable to connect to the remote server --> No connection could be made because the target machine actively refused it xx.xxx.xx.xxx:25. Smtp status code 'GeneralFailure'. Rule id: Subscription9e1271fb_1975_4d79_90e8_57731954a8ae

The "remote Server the error is referring to is my primary mgmt server.

Any and all assistance is greatly appreciated.

TS

Answer 1

Hi @Tony Strother ,

Did you come by the following blog post?
http://blog.tyang.org/2015/09/26/using-exchange-online-office-365-for-opsmgr-email-notification

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(If the reply was helpful please don't forget to upvote or accept as answer, thank you)

Best regards,
Leon

Answer 2

HI @Tony Strother ,
I have already seen this particular error and my case the issue was with permissions. The SCOM Server had to be added as an allowed sendet for this to work. I am not aware of the exact config on the SMTP Server side, but this I was told by the Messaging scpecialist after we got it working.
Is the user you are using ($msolcred) the same you use in the notification configuration?
Do you execute the PowerShell code (testing the notification) also from the SCOM Management Server?

Thanks and Regards,
Stoyan

Answer 3

Morning and thank you for the assistance. I did try: http://blog.tyang.org/2015/09/26/using-exchange-online-office-365-for-opsmgr-email-notification
among others with no success.
Question: What should be selected on the Access Tab\Authentication? Currently set to Anonymous.
I have set, under the General Tab\Advanced-
All unassigned Port 25
IPAddress of the Primary SCOM Mgmt Server Port 25

I am running the PowerShell script from the Primary Mgmt server.
The one error I did get but not now is:
Failed to send notification using device/server 'mgmtservername' over 'Smtp' protocol to 'myaddress@Piepel .xxx'. Exception 'Microsoft.EnterpriseManagement.HealthService.Modules.Notification.SmtpNotificationException': The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.3 Client was not authenticated. Smtp status code 'MustIssueStartTlsFirst'

Thanks again!
TS

Answer 4

Meant to add that I am not seeing any errors that I can find.

Thank you,
TS

Answer 5

Evening,

Continuing to work on this.

Thanks for your time and assistance.

TS