There's no way to whitelist or blacklist users in my Office 360 Outlook program. I can add the sender to the Block or Allow list, but when I hit save I get Property validation failed. Have tried this in 3 browsers including one with all add ons disabled so I know the problem isn't on my end Cause. This issue occurs because the external email address is treated as an internal email address. Resolution. To resolve this issue, install the following update rollup
Trying to set some trusted domains on a few tenants and it just fails completely through the delegated admin powershell to exchange online. Can get connected, can list mailboxes etc happily but cannot run this command. get-Mailbox -Resul.. This cmdlet controls the following junk email settings on the mailbox: Enable or disable the junk email rule: The junk email rule (a hidden Inbox rule named Junk E-mail Rule) controls the delivery of messages to the Junk Email folder or the Inbox based on the SCL Junk Email Folder threshold (for the organization or the mailbox) and the safelist collection on the mailbox. Users can enable or. After logging in successfully to the Exchange (365), I run the following command to add the email address I wish to block: Get-Mailbox | Set-MailboxJunkEmailConfig uration -BlockedSendersAndDomains firstname.lastname@example.org. I then get the following error: The junk Email configuration couldn't be set. The user needs to sign in to Outlook Web App before.
Click the Add button and now navigate to the location you dumped the extracted files. For most, the files you want will be in ADM>en-us, or something similar. You will know once you locate the correct folder as there will be a bunch of *.adm files in the folder. Select them all and then click the Open button Note. Messages from senders that users have added to their own Safe Senders lists will skip connection filtering as part of EOP (the SCL is -1). To prevent users from adding entries to their Safe Senders list in Outlook, use Group Policy as mentioned in the About junk email settings in Outlook section later in this article. Policy filtering, Content filtering and Defender for Office 365 checks. The purpose of the Blocked Senders List is - to prevent the event of false-negative meaning, an event in which a spam mail manages to bypass existing mail security filter that didn't manage to identify and classify the E-mail as spam mail. When we add a domain name or an E-mail address to the Blocked Senders List, an From the Get-MailboxJunkEmailConfiguration output above I can see Junk Email configuration is Enabled for this mailbox, all email addresses in the Contacts folder of this mailbox are automatically added to the trusted senders list, any emails from the example.com domain are considered trusted senders and delivered to the mailbox, and no domain is considered blocked and hence not delivered to.