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MailDefender
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End Of
Tiresome Interruptions
MailDefender helps you get back
to business, ending tiresome
interruptions by relying on:
- Bayesian filtering analyses text
patterns of known SPAM
messages..
- Internal honeypot network with
over 5,000 email addresses
collecting SPAM..
- Third party RBL (blacklists)
help identify dangerous networks
and senders..
- SPF/SenderID/DomainKeys
frameworks help establish
trusted relationships..
- Distributed Checksum Clearing
Houses help idenitify bulk mail
pieces..
- Internal RBLs, IP reputation
lists, network checks establish
sender reputation..
Truly, the combination of
experience, high volume of mail
processing, commercial grade
subscriptions and constant
monitoring and development
deliver the most reliable flow
of mail you actually want to
read.
Comprehensive
Mail Analytics
There is no single software or a
single process that can
successfully eliminate a
significant amount of SPAM on
its own. As SPAM and online
threats evolve the gradual mail
analytics become more important
and the efficient implementation
of those processes is critical.
To offer you an example: as we
learn about more SPAM tactics
and patterns we perform more
checks against the sender,
recipient, email, attachments,
context, filenames, text
patterns - and as the size of
those checks the delay to the
message delivery due to
processing can become
significant. MailDefender
employs a comprehensive mail
analytic check which runs
thousands of message comparisons
simultaneously, reducing average
message processing time to a
fraction of a second.
Message processing development
is critical to effectively
stopping SPAM, something that is
impossible to accomplish with
appliances and server-installed
solutions. MailDefender
processes millions of messages
each hour and learns from the
mail flow patterns in real-time,
something that appliance makers
and server-software publishers
usually lag days or weeks
behind. The future of SPAM
protection is on identifying
treats in realtime and
MailDefender is designed from
the ground up to take advantage
of it.
Proactive Mail
Identification Systems
MailDefender, through
proprietary technology, can
predict the type of a message it
is about to receive by analysing
only the SMTP conversation and
the IP reputation of the sending
host. For example, if the
sending server does not even
wait for the welcome banner to
start the SMTP conversation it
is obvious that the message will
be SPAM. Furthermore, after the
same server has been the origin
of 10,000 SPAM messages over the
past hour it is pretty clear
that the next message will also
likely be SPAM. MailDefender
will not automatically drop
these messages but every piece
of the SPAM criteria can lead to
a score that qualifies it as
junk.
MailDefender performs hundreds
of checks before the SMTP
connection is even established.
Doing so helps reduce the amount
of mail you have to review for
potential junk content.
Reliance On
RFC And Established Standards
MailDefender is proud to be 100%
based on established RFC
standards. RFC standard
compliance is very important to
the timely and reliable delivery
of legitimate mail. We do not
use any greylisting technology,
we do not enforce extensive
delays between SMTP commands and
we do not use any "tricks.
Reliance on established
standards is crucial to timely
delivery and ability to
effectively troubleshoot mail
flow issues with remote servers.
Quarantined
Messages, Not Rejected Or
Delayed Messages
MailDefender is one of the few
providers that quarantine junk
mail instead of rejecting it
outright. This is valuable for a
number of reasons, primarily
because it never takes the
control out of your hands.
Furthermore, quarantined mail
can always be read on demand and
released by the user if it is
indeed legitimate, saving the
time that would otherwise have
to involve system administrator
and a remote sender resending
the message.
MailDefender does not use any
message delaying technology.
While we understand the
potential benefits behind
greylisting they are absolutely
unacceptable in a business
environment where timely
delivery is important.
Furthermore, with more and more
misconfigured and overloaded
mail servers it is in our
customers interest to accept
mail as fast as posssible and
process it further internally.
With our processes you can
expect the messages to reach you
in the fastest way possible.
Protection
From DDoS, Slamming, Botnet
Attacks
Because MailDefender accepts
network connections on your
behalf, we are the ones taking
on the network attacks from
hackers and botnets. We have a
very redundant infrastructure
with a ton of bandwidth and can
withstand a large-scale DDoS
because of the number of systems
that accept inbound mail,
something that is impossible to
do with a single appliance or a
single server-based firewall.
Furthermore, our networks are in
constant sync and can detect the
botnet membership by the type of
behavior and content being sent
over time from the remote
systems. Because we have so many
points of entry we have a larger
sample size and more acurate way
to deny connections to known
botnets.
Finally, spammers live and die
on their reputation.
MailDefender, due to its size,
knows how many messages it
receives from smaller mail
servers or even servers on cable
& DSL networks many of which are
residential. So when a server
goes from sending a few dozen
messages to a few thousand
messages a day we can stop them
in their tracks.
Adaptive
System Advantages
The key to effectively
eliminating SPAM and unwanted
content is being adaptive to the
mail flow - as it happens. One
of the most important features
of MailDefender is its ability
to adapt to the changing mail
flows, hour to hour, minute to
minute, second to second. It is
estimated that over 25% of the
hosts on the Internet are a part
of a botnet or have been
compromised in some way.
Adapting to those trends and
filteing out messages based on
topology maps is crucial to
eliminating messages because
RBLs, honeypot traps and SPAM
rules do not work against 0-day
SPAM or other threats that are
just temporary but still impact
your organizations productivity.
MailDefender can scale and
respond in realtime as well as
adapt to the emerging threats
long before they reach your
inbox.
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