All Email Security Gateway.
All Barracuda Networks appliances are built on industry-standard Linux x86 architectures. Access to the user interface is provided through a Web interface using standard HTTP or HTTPS protocols. System monitoring can be performed via standard SNMP protocols. System events are available via standard SYSLOG protocols. Configuration backups can be automated and performed over standard FTP or SMB protocols. For Single Sign-On integration, the Email Security Gateway can authenticate via industry standard LDAP, RADIUS, or POP3 protocols.
The Email Security Gateway conforms to Internet RFC standards surrounding SMTP, including but not limited to RFC 2821 (which formally obsolete RFC 821 and RFC 1123). Secure site-to-site email transmission is possible through SMTP/TLS. Email can be retrieved from existing email servers for scanning utilizing IMAP and POP3 protocols.
Specific to spam blocking, the Email Security Gateway also supports multiple sender authentication standards, including SPF and DKIM. For recipient verification, the Email Security Gateway can utilize LDAP and SMTP verification in addition to native verification techniques. To perform IP reputation checks, the Email Security Gateway is able to utilize industry-standard external DNSBL (blacklists) in addition to its own native Barracuda Reputation techniques. When relaying outbound email, the Email Security Gateway can use standard SMTP authentication utilizing either an SMTP Auth Proxy or LDAP.
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