Microsoft365 e-mail sending failed, Logs generated ElasticSearch Error

[Jackson]

Infos:

• Used Zammad version: 5.2.3
• Used Zammad installation type: package
• Operating system: Centos7.6
• Browser + version: Edge Version 107.0.1418.35 (Official build) (64-bit)

Expected behavior:

• Set up Microsoft365’ account already, the user sent a e-mail to our account(support@ulinkcollege.com). after I reply to the new ticket, the user can receive the email

Actual behavior:

• It does not work, the user can’t receive my e-mail. Check the error log and found that it is related to ElasticSearch, but I don’t know why.

Steps to reproduce the behavior:

• Tried to “systemctl stop elasticsearch”, and sent again but failed. the user still can’t receive my e-mail.

Logs Error:

Thank you very much! I am looking forward to your reply.

[MrGeneration]

Your screenshot shows that there’s no reply button below the article you consider as answer.
That’s the case for note articles which -of course- do not send a mail to the customer by default.

You can workaround this by using triggers of you simply use the reply button on the initial article to create a mail article. Elasticsearch has nothing to do with this behavior.