2 anti-spam – AirLive ES-6000 User Manual
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6.2 Anti-Spam
ES-6000 can filter every incoming and outgoing e-mail. Users will no longer receive plenty of spam which
saves your precious time for work rather than waste your time on taking the business e-mails out of spam. It
also lowers the risk of deleting the business e-mails when deleting spam.
6.2.1 Setting
Anti-Spam Setting
You may view or configure the settings of e-mail inspection.
E-mails exceeding the threshold score can be added a warning message and a score tag to the subject,
whereas others below the threshold score can only be added a score tag in the subject line.
The approaches of inspection:
Check spam fingerprint
: Generates an ID number by analyzing the e-mail with algorithms, and
then compare it to the spam ID list on server.
Enable Bayesian filtering
: Compares the e-mail header to the Bayesian database.
Enable spam signature push update
: Generates a value by analyzing the e-mail with algorithms,
and then compare it to the spam signatures on database.
Greylist Filtering
: Drops the session created by the first incoming e-mail.
Check if the sender’s IP address is on Real-Time Block List
: Compares the sender IP address
to the blacklist on server.
Enable email spoofing detection
: Checks whether the domain engaged in the execution of
SMTP HELO / ESMTP EHLO commands is identical with that of the sender’s address.
Check the validity of each sender’s account
: Uses probing packets to detect the validity of a
sender’s account.
Auto-Whitelist
: Automatically whitelists the subnet belonging to senders based upon a mean
spam weighting accumulated from previously sent email.
Enable Sender Policy Framework (SPF)
: Checks whether the sender’s IP address is identical
with the one specified in the DNS SPF record.
Enable DomainKeys
: Verifies the domain of an email sender and the message integrity.
ES-6000 uses default settings to filter spam upon no approach being taken.
Bayesian filtering works not until database has accumulated 200 spams and 200 hams.