XpressHost - Spam
Firewall
We
backup
our
high-availability
email
services
with
enterprise-class
spam
and
virus
protection.
Protecting
our
Customers.
Email
has
undoubtedly
become
a
key
tool
for
communications
among
companies
worldwide.
However,
with
frequent
virus
attacks
and
the
alarming
rate
that
spam
has
been
filling
up
inboxes,
email
can
be a
frustrating
means
of
communicating.
To
protect
our
customers
and
combat
the
growing
spam
problem,
XpressHost
provides
enterprise-class
spam
and
virus
protection
for
all
mail
servers
with
top-of-the-line
Spam
Firewalls
from
Barracuda
Networks.
Protection
Against
Email-borne
Threats
-
The
Barracuda
Spam
Firewall
is a
powerful,
enterprise-class
solution,
with
each
firewall
appliance
capable
of
supporting
thousands
of
active
email
users
and
handling
millions
of
messages
each
day.
XpressHost
currently
manages
10
Barracuda
Spam
Firewalls,
which
provide
our
customers
with
comprehensive
protection
against
the
most
current
email-borne
threats
that
can
cripple
networks
if
left
unprotected.
The
Barracuda
Spam
Firewall
optimizes
performance
of
our
mail
servers,
while
utilizing
the
following
protections:
-
Anti-spam The algorithms and methods used by the Barracuda Spam Firewall are the most comprehensive and most advanced in the industry at detecting and filtering spam resulting in the lowest rate of false positives.
-
Anti-virus By utilizing dual layer virus blocking, decompression of archives and file type blocking, the anti-virus engine in the Barracuda Spam Firewall provides complete virus protection.
-
Anti-phishing The Barracuda Spam Firewall provides robust protection against phishing schemes which are often used to gather confidential information about an organization or it's individual users.
-
Anti-spyware (Attachments) All attachments are scanned and any spyware executables are detected and eliminated immediately.
-
Denial of Service Protection Rate controls are utilized to stop denial of service attacks as well as dictionary based spam attacks. These rate control systems are integrated and automatic in the Barracuda Spam Firewall.
12
Layers
of
Defense
-
The
Firewall
architecture
leverages
open
source
virus
and
spam
solutions,
in
conjunction
with
12
defense
layers:
-
Network Denial of Service Protection
-
Rate Control
-
IP Reputation Analysis
-
Sender Authentication
-
Recipient Verification
-
Virus Scanning
-
Policy (User-specified rules)
-
Spam Fingerprint Check
-
Intent Analysis
-
Image Analysis
-
Bayesian Analysis
-
Rule-based Scoring

This
architecture
optimizes
the
processing
of
each
email
message,
which
yields
the
performance
required
to
process
millions
of
messages
per
day.
Unlike
software
solutions,
the
Barracuda
Spam
Firewall
reduces
the
load
placed
on
our
mail
servers
by
off-loading
both
spam
and
virus
filtering.