Scrollout F1 is an easy-to-use anti-spam email gateway designed for Linux and Windows email system administrators.

Scrollout F1 aims to be a simple yet powerful and already configured email firewall with free anti-spam and anti-virus protection so you can secure any email servers you maintain. It supports the most popular email servers, including Microsoft Exchange, Lotus Domino, Postfix, Exim, Sendmail, and Qmail.

It has Built-in multi-layer security levels that are easy to configure. It combines simplicity with effective protection using an additional set of rules and filters. It is available as a 64-bit ISO image.

For 5,000 messages a day, you only need 30 GB of drive space and 1 GB of RAM. No requirements for the processor are mentioned, so assume it will run on older hardware.

Scrollout F1 has too many features (whitelist, blacklist, fingerprint, newsletter rules, quarantines, scoring) to continue here, but we think you'll be impressed.

Scrollout F1 Features:

TLS 1.2

Different Quarantine per domain

Different Scores per Domain for Tagging and Blocking SPAM

Additional SMTP ports

DKIM verification and signing - protection against fake messages that appear to come from your domain or from yourself

SPF verification with SRS for forwarding

Provides DMARC policy

Recipient verification for Active Directory or LDAP

Built-in rules for newsletters and other messages generated by automated systems

Protection against executable files, malicious content and scripts

Protection against forged domains like (fake) yahoo.com, gmail.com, etc.

Protection against wifi, dynamic, invalid, or unknown hosts.

Replicate messages to a backup (sub)domain.

Whitelist [sender domain] using drag & drop emails (with MS Outlook)

Blacklist [sender address] using drag & drop emails (with MS Outlook)

Verify Sender IP against weighted white/blacklist providers (score RBL).

Relay outgoing messages through a global or per-sender domain ISP (smarthost)

Assign different outbound IP pools per sender domain

Built-it parallel outbound delivery from/to multiple hosted domains

Enforce encrypted connection with email servers

Backup (BCC) incoming/outgoing emails to an alternative mailbox

Clone/duplicate incoming emails to another (sub-)domain

Custom Spam TAG in the Subject

Fallback delivery to alternative email servers

Learn spam from other email servers

Internal DNS cache

Built-in RBL for IPs, Nameservers, Domains and DKIM

Build-in Fingerprints service

IPv6

Advanced internal reputation service