Hi dear community,

Starting from yesterday, we are experiencing an issue that prevents Maximo from sending emails via office365 smtp server (smtp.office365.com). Our customers have the problem and we have it as well on our own demo environments.
Nothing has changed from Maximo side, so I believe there is something wrong with the Microsoft smtp server.
What about you? Do you have this problem?


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Tahar Belaid
Senior Consultant
TriNmax
QC
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#Maximo
#AssetandFacilitiesManagement

Please try to re import the certificate from o365 using WebSphere 'retrieve from port' - I expect this has expired and been replaced on the Microsoft side

Regards

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Kevyn Williams
Cloud Infrastructure Manager
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Agreed with Kevyn that SSL certificates are a likely culprit. We use it for email listener (not SMTP) but I know a few weeks ago we started seeing a new certificate chain for that which we needed to add. 

These types of errors are typically more detailed in the SystemErr.log of WebSphere so I would look there if retrieving the new certificate doesn't work. If you're running WebSphere 8.5.5 I would also make sure you configure it to support TLS 1.2 (8.5.5 doesn't out of box but WebSphere 9 does). I thought that had already become a requirement to require TLS 1.2 but it might just be starting to take effect.

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Steven Shull
Director of Development
Projetech Inc
Cincinnati OH
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Tahar,

One of my customers had the same issue and here is what we did to resolve:

Root Cause - Issue #1 Updated Certificates for Office365 from a single certificate, to now a chaining one. 2 certificates needed to be loaded into Websphere to resolve the issue.

Issue #2 - Emails from Maximo – Cannot be sent with Maximo out of box functionality which is Logged in user send from that user's email. The send from must be from SMTP User – maximo@company.com where company.com is the email address.

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Brad Knowles
Interloc Solutions
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Thank you very much Brad and thank you all for your answers!

We were able to solve the problem by deleting the old SSL certificate (although it was valid until 2030) and by adding 2 other certificates:

• Using Add - enter location for cert - E:\Client-Certificate\smtp.office365.com.cer
  • Alias Name - smtp.outlook.365
  • Apply and OK
• Select Retrieve from Port (to get server chain certificate)
  • Host - outlook.office365.com
  • Port 993
  • Alias - office365

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Tahar Belaid
Senior Consultant
TriNmax
QC
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Original Message:
Sent: Fri October 02, 2020 10:10 AM
From: Robert Knowles
Subject: General problem with office365 smtp server

Tahar,

One of my customers had the same issue and here is what we did to resolve:

Root Cause - Issue #1 Updated Certificates for Office365 from a single certificate, to now a chaining one. 2 certificates needed to be loaded into Websphere to resolve the issue.

Issue #2 - Emails from Maximo – Cannot be sent with Maximo out of box functionality which is Logged in user send from that user's email. The send from must be from SMTP User – maximo@company.com where company.com is the email address.

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Brad Knowles
Interloc Solutions
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