WebNov 16, 2024 · The trouble is, I see no way to block .doc files within Exchange Online Protection (we use Office 365 E2). Under the "Protection", then "Malware filter" option in Exchange admin center, there is a way to block common file types, but none of the file types are .doc, and there is no option to add a custom file type in that menu. WebMar 15, 2024 · We have a Malware policy to block incoming htm and html attachments, just recently we have started to see incoming emails blocked because of an attachment called Nameless.htm. Examples . It looks like this might be something that is being created by Office 365, Exchange Online when an email has a MS Word document attached to.
"Common Attachment Types Filter" and file types known by …
WebSep 26, 2024 · New file types will be added into the block file type list. Based on Microsoft’s evaluation, these file types are rarely used. If one of these file types is already added into your allowed list, it will not be added into the blocked list. If you want to continue to allow these, you can update your allowed list using the PowerShell command. WebMany malware closely associate with certain file type extensions (examples: .doc, .exe, .dll). The file's extension identifies the file type. Similarly, specific attacks often associate with a specific file name. Cloud App Security can block files according to the file type, file name, file extension, or file contents that contain suspicious URLs. current photo of marla maples
Excel and Word Attachments being blocked by EOP
WebMar 1, 2024 · Summary. There are file types recommended to be blocked at the email gateway and are known to be a source of infection/malicious code. It is recommended to block executable file types since infection risk is high. It may, for example, trigger malicious code or payload upon file click execution. Furthermore, executable file type attachment … WebJun 13, 2024 · Excel and Word Attachments being blocked by EOP We have Office 365, and added a few new File Types to the Common Attachment Types Filter in the Exchange Admin Center. We started to see emails with .docx and .xlsx file attachments get quarantined by EOP and marked as malware. WebMar 7, 2024 · Option 2: Block emails with .One File attachment extention using Anti-malware Policies. As we have seen in the previous section of the post, We had created a rule in Exchange online to block emails with file attachments having .one extensions. You can also reject these type of emails by creating an anti-malware policy as well. charming french