Block specific IP address or sender

You can specify a single IP address, a range of IP addresses, or a single address to add to the block list.

Click Configuration > Transport (SMTP) scanning policy > Anti-spam > Block specific senders. From the Block list dialog box, click Add.

Specify an IP address or IP address range

Click Specify an IP address or IP address range. Enter an IP address or a range of IP addresses.

Specify sender

Click Specify Sender. Enter a sender address. You can use wildcards, such as '*' and '?'. E.g. *@company.com

Comment (Optional)

You can enter a comment for administrative purposes.

Note From the Manage changes menu, click Save changes to save your configuration.