By sending spam to invalid users, the SMTP service will send a bounce-back to the forged From: header with the spam attached. As a result, the mail queue fills up with thousands of undeliverable bounce-backs, slowing down the whole system and making the SMTP service unresponsive. Toriss solves this problem completely.
Instead of bouncing emails that are sent to invalid users, Toriss will reject the email as soon as the RCPT command is received. Toriss prevents Reverse NDR attacks, blocks email that is addressed to invalid or nonexistent users, email is blocked at the SMTP level in response to a RCPT command, prevents the mail queue from filling up with undeliverable bounce-backs.
What is new in this release:
Version 2.0 has added the ability to reject unauthenticated connections from dynamically assigned IP addresses.
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Supported Operating Systems:
Windows 2000 |
Windows 2003 |
Windows 7 |
Windows Server 2008 |
Windows Vista |
Windows XP |
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