[Migrated from MSDN Exchange Dev]Exchange 2019 does not search forwarded message with attachment

Question

[Note] This thread was originally posted on MSDN. As the MSDN Exchange Dev forum mainly focuses on developing issues and the TechNet Exchange forums for general questions have been locked down, we manually migrated this one to Microsoft Q&A platform to continue the troubleshooting.

Hi everyone.

We encountered a very strange bug with exchange search.

Context:

Outlook working in on-line mode (running on terminal servers, so we can`t chnage it to cached mode due high IO)

When user get message with any attached file AND forward it, the message disappears from the search results. Outlook search showing forwarded message from "SENT" folder, but do not showing original message in "INBOX"

There is an example on sreenshot

as you can see, search showing only 3 results, while we have 4 messages (2 in inbox, 2 in sent).

OWA have same issue.

Users do not use Conversation View, as some correspondence may contain dozens of messages that are difficult to view in this form.

This problem appear after upgrading to Exchange 2019 (CU3) from 2016. Now we installed CU8, but this bug still here...

Has anyone encountered a similar bug?

Answer 1

We have the same problem: Outlook (online mode) does not see forwarded messages with an attachment in the search (in the Outlook Inbox).
Our environment:
Windows Server 2019 (all latest updates as of 08.11.2021)
Exchnage Server 2019 (CU 11 + CU11 Oct21SU)

The results of running the troubleshoot-mordernsearch.ps1 utility are in the attachment (csv in txt files):
frist_message.txt - Log with the first message, where:
InternetMessageId: 9f7468530b984debb75ad1cf92cbd891@mathieu.company .ru
BigFunnelCorrelationId: 5aef897a-7433-4753-8ceb-7abe257e87ae
IndexStatus: Indexed

forwarded_message.txt - Log with forwarded email, where:
The original message in the Inbox (which stopped being looked for)
InternetMessageId: 9f7468530b984debb75ad1cf92cbd891@mathieu.company .ru
BigFunnelCorrelationId: NULL
IndexStatus: ShouldNotBeIndexed
And we see the forwarded message in Sent (which shows up in the search):
InternetMessageId: 51c4d0a647714432afea1660ae112805@mathieu.company .ru
BigFunnelCorrelationId: 432bcff7-3c6c-4df9-8013-3329bba3e092
IndexStatus: Indexed

I don't have this problem with forwarding via OWA or mobile outlook.

Why does the email get Status: ShouldNotBeIndexed in my Inbox and why is BigFunnelCorrelationId missing?
And how to fix this problem?
147598-frist-message.txt147599-forwarded-message.txt

Answer 2

We are also seeing the same behavior with freshly created calendar entries

https://learn.microsoft.com/en-us/answers/questions/603861/exchange-2019-and-unsearchable-calendar-items.html?childToView=611050#comment-611050

Are there any MS Reps who want to pick this up and get some diag data offlist to try and sort this out

Answer 3

Has anyone found a resolution to this issue yet? We have the same problem:

After installing an earlier CU (CU6 perhaps), BigFunnel stopped on all mailboxes. Every search now only yields emails prior to the CU install date.

• I've tried installing CU9 and CU10 and still broken.
• I've tried migrating mailboxes to a new database but get an error that I can't migrate because BigFunnel indexing is out of sync or something like that, so a catch 22.
• I've tried Start-MailboxAssistant -Identity user1 -AssistantName BigFunnelRetryFeederTimeBasedAssistant

Microsoft, please fix this!

Answer 4

Followed the above steps and download the steps from this site:

https://github.com/microsoft/CSS-Exchange/releases/latest/download/Troubleshoot-ModernSearch.ps1
Run on Exchange management server.

And let me know if anybody can reproduce this, we will check in our environment to see if can come up with a solution for this kind of bug.

Answer 5

sending a new email , ( Outlook online mode.)
Using troubleshootmordernmailboxsearch.ps1 checking the bigfunnelcorrelation ID Attribute value.
troubleshoot-mordernsearch.ps1 -mailbox "mbxname" -itemsubject "subject name " -matchsubjectsubstring | select bigfunnelcorelationID
forward the email to someone,
then Using troubleshootmordernmailboxsearch.ps1 check the bigfunnelcorrelation ID of the original email if it goes missing.