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Attachment restrictions
With the Attachment restrictions page, you have the ability to specify which email attachments/file types should be permitted and which ones should be denied.
The following restrictions can be configured:
| Restriction | Description |
|---|---|
| Blocked Extensions | Messages that have an attachment with any of the selected extensions will be rejected. See How to Block specific attachment file types. |
| Restriction options | – Block password-protected archive attachments – If enabled, blocks messages with password protected attachments like zip files. See How to Block password-protected archive attachments. – Block potentially unwanted attachments – If enabled, rejects attachments on inbound messages only that are considered dangerous or unwanted. See How to Block potentially unwanted attachments. – Block Attachments Containing Hidden Executables – If enabled, emails are checked and the message will be rejected if the archive appears to contain an executable. See How to Block attachments containing Hidden Executables. – Block attachments with macros – If enabled, then any message with a document based attachment (.doc, .xls, .ppt etc) that contains any kind of macro will be rejected. See How to Block attachments with macros. |
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