CleanMail System Requirements

Seamless Integration Into Your E-Mail Environment

CleanMail's transparent proxy architecture was designed to make the integration into existing E-mail environments simple and straight-forward. CleanMail Server allows you to configure an unlimited number of SMTP/POP3 proxy ports or POP3 connectors (full multi-domain support). CleanMail can be installed on your existing mail server and does not require additional hardware.

Configuration Options

Here is a small selection of CleanMail's configuration options:

SMTP Proxy Options

• IP address/port number for incoming mail
• Outgoing mail server/port number
• Maximum resource usage
• Open relay protection: list of recipient address patterns where email is accepted
• Protection against directory harvesting attacks
• (optional) List of recipient address patterns with spam checking enabled
• (optional) Traffic limiting, to prevent mail flooding

POP3 Proxy Options

• Account and POP3 server information

POP3 Connector Options

• POP3 account and POP3 server network name or address
• Mail account and SMTP server network name or address

Available Mail Filters

• Attachment filter
• Anti virus filter: supports third party anti virus software from many vendors
• Delay Filter
• Simple integration of third-party antivirus scanners
• SpamAssassin
• Mail storage: save all incoming mail to disk
• Spam trap filter: automatically learn spam mails sent to a honeypot address.
• User-configurable filters.

Filter Options

• Policy: reject/delete, reject/redirect, reject/deliver, accept/deliver, configurable reply messages
• Recipient address patterns: where to apply a filter

SpamAssassin™ Configuration Options

• Required score (how many filtering points are needed to flag a mail as spam?)
• Flag spam in subject line yes/no, configurable text

Read more about countless other SpamAssassin™ configuration options here: http://spamassassin.apache.org/

Supported Standards

CleanMail complies to the following standards:

• Simple Mail Transfer Protocol (SMTP): RFC 2821
• Post Office Protocol Version 3 (POP3), RFC 1939
• Internet Message Format: RFC 822, RFC 2822, RFC 2045-2049, and RFC 2231
• SMTP Service Extensions, RFC 1869
• SMTP Service Extension for Authentication, RFC 2554
• SPF (Sender Policy Framework)

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