You may receive error message “The property keyword isn’t supported” when run cmdlet below to delete mail content from user mailbox’s.
If you see in cmdlet in above screen, I have done search query based on Subject :”FW: Full BAckups Report.” which is an forwarded message by other mailbox. in Serach-mailbox cmdlet search scope is very restricitive and can be use with very care. In above cmdlet if i remove part “FW:” then it works. So you need to make sure valid search query if you see this error in search-mailbox.
|Attachments||attachment:annualreport.pptx||Messages that have an attachment named annualreport.pptx. The use of attachment:annualreport or attachment:annual* returns the same results as using the full name of the attachment.|
|Cc||cc:paul shencc:paulscc:email@example.com||Messages with Paul Shen in the Cc field.|
|From||from:bharat sunejafrom:bsunejafrom:firstname.lastname@example.org||Messages sent by Bharat Suneja.|
|Keywords in retention policy||retentionpolicy:business critical||Messages that have the Business Critical retention tag applied.|
|Date when messages expire according to policy||expires:4/1/2010||Messages that expire on April 1, 2010.|
|Sent||sent:yesterday||All messages sent yesterday.|
|Subject||Subject:”patent filing”||All messages where the phrase “patent filing” appears in the Subject field.|
|To||to:”ben smith”to:bsmithto:email@example.com||Messages that have Ben Smith in the To field.|
You have to be assigned the following roles to search for and delete messages in users’ mailboxes which is notassisgn by default to any security role group:
- Mailbox Search This role allows you to search for messages across multiple mailboxes in your organisation. Administrators aren’t assigned this role by default. To search multiple mailboxes, add yourself as a member of the Discovery Management role group.
- Mailbox Import Export This role allows you to delete messages from a user’s mailbox. This role isn’t assigned to administrators by default. To delete messages from users’ mailboxes, add the Mailbox Import Export role to the Organisation Management role group.