The presence of anti-spam and security features on an effective and efficient professional mail server like MailEnable cannot be overlooked. Keep in mind that spam can quickly fill inboxes with useless emails.

1. 5 Features Your Mail
Server Anti-Spam
Should Include
This Presentation By: - MailEnable Pty Ltd
Address: 59 Murrumbeena Road
Murrumbeena, 3163
Victoria, Australia
Visit: www.mailenable.com
Call Us On: +613 9569 0772

2. ANTI SPAM SIGNIFICANCE
The presence of anti-spam and security features on an effective and
efficient professional mail server like MailEnable cannot be
overlooked. Keep in mind that spam can quickly fill inboxes with
useless emails, steal information from databases, and affect server
functionality, among other adverse effects. Basically, the more
effective and efficient anti-spam and security protocols in a
professional email server, the better it will be for the organisation in
general and for its employees in particular.
Although there are many anti-spam features available in the market,
the following are the most important features that every business,
large and small, should have on its enterprise mail server.

3. #1 Bayesian Filtering
Think of the Bayesian spam filter as the intelligent anti-spam feature in the
best professional mail server. Bayesian filtering works by calculating the
probability of an incoming email as spam based on its contents such as:
• words and characters in the senders, message paths, body and headings of
the email
• Meta information
• pairs of words and phrases
• other aspects like HTML codes
Even the entire context of the email will be rated! The filter gradually builds up
a virtual library of the components of valid email and spam email by
“learning” so much so that little to no spam can get through the professional
email server in due time.

4. #2 Reverse DNS Blacklisting
This anti-spam filter method involves the use of a DNS-based
Blackhole List (DNSBL), which is a list of IP addresses published via
the Internet Domain Name Service (DNS) identified as networks,
sites and computers associated with spam email. Basically, the
professional mail server must be configured to either flag or reject
messages sent from sites listed on the black hole list.
Keep in mind that the DNSBL is not a specific policy or a specific list –
it is a software mechanism with dozens in existence, each one using a
wide variety of criteria in listing and delisting IP addresses. You must
then review the capabilities of DNSBL providers in terms of their
ability to match your requirements in the anti-spam filter.

5. #3 End User Blacklisting And Whitelisting
Think of blacklisting and whitelisting as the opposite ends of the
spectrum but both have similar function – to block out spam from
entering the system, thus, protecting its integrity from the likes of
phishing attacks. Experts are divided on the issue of blacklisting and
whitelisting particularly on the pros and cons for each method. The best
solution: To include both anti-spam methods in a professional mail server
like MailEnable, thus, allowing clients to enjoy the best of both types.
Basically, email senders on the blacklist will immediately be refused
transmission of their messages to the intended recipient, a process
facilitated by the SMTP connector. Emails from whitelisted addresses are
delivered as soon as possible – no delays by greylisting – to the intended
recipient via SMTP as well.

6. #4 Abuse Prevention
Many email senders, however, abuse their privileges to the detriment
of the organisation/recipient. The anti-spam filter that prevents such
abuses involves the administrator setting limits to the number of
messages sent by certain users. A professional mail server like
MailEnable, for example, has default settings of 100 messages per
hour sent through the system, thus, preventing the abuse of
privileges.
But that’s not all. The best enterprise mail server can also be
programmed to permanently block IP addresses that have issued one
too many invalid commands, or provided one too many invalid
passwords, or violated one too many security policies. Limits are also
imposed on these anti-spam measures.

7. Sender Policy Framework (SPF)
This anti-spam filter in a professional mail server works by
discouraging spam mailers to hide behind the practice of email
spoofing to enter the email server. Basically, the Sender Policy
Framework (SPF) specification will define a policy framework
coupled with an authentication scheme and a machine-readable
language that will identify valid email senders from spam mailers
using a query searching method.
When all of these anti-spam methods – and perhaps a few more like
relay control, antivirus scanning and message filtering – are in a
professional mail server, then you have made the right choice.

8. THANK YOU FOR READING
MailEnable Pty Ltd
To Know More, Visit
www.mailenable.com
Or Call Us On,
+ 613 9569 0772