Protect and Stop Unwanted Emails Reaching Your Network

Spam filter are utilized to process the incoming emails and prevents the spam before it is reaches the user’s inbox. Its major function is to detect and eliminate the junk emails getting into the user's accounts. To avoid the spam mails, efficient spam filters are offered by our company to manage and provide spam-free inboxes. We offer Incoming and Outgoing spam filters based on your grade of protection.

We offer Cloud-based Spam filters identifies phishing that damages computer, server, or computer network. Once the spam filter is installed you will get an administration portal where you can manage main features whitelists and blacklists management, subject or content filters, virus identification, email recovery and quarantine blocking spam.

Enjoy Free Trail On Our Cloud-Based Spam Filter Service

Incoming SPAM Filter

2,500 / mo

  • Spam Filtering (inbound)
  • Anti-Malware
  • Reporting Portal
  • Quarantine Available
  • 7 Day Email Relay
  • Always-on Email Continuity
  • Buy this service

Both I/O SPAM Filter

5,000 / mo

  • Spam Filtering (inbound and outbound)
  • Anti-Malware
  • Reporting Portal
  • Quarantine Available
  • 7 Day Email Relay
  • Always-on Email Continuity
  • Buy this service

Outgoing SPAM Filter

3,500 / mo

  • Spam Filtering (inbound only)
  • Anti-Malware
  • Reporting Portal
  • Quarantine Available
  • 14 Day Email Relay
  • Always-on Email Continuity
  • Buy this service

Why choose SixthStar Incoming Spam Filter?

SixthStar provides you an excellent incoming spam filter in which user send mails to the recipient. Before the mail reaches to the receiving end, it will undergo detection process in the intermediate server to identify any malware presence. Once the detecting process gets finish, the mail will automatically reaches to the receiver end.

Guard your network against spams

We have applied innovative and best strategy to remove spam mail before it reaches the user inboxes.

Detects new spam instantly

We ensure uninterrupted progress in safe data collection and analysis, immediately finding new techniques and identifying the threats. That amassed spam filter technique is shared in real-time with all our worldwide clients, offering an instant solution against new malware issues.

More Email Continuity

An additional protection layer is provided in spam filter for redundancy and email continuity purpose. When the receiver mail server is unapproachable, SixthStar’s Spam filters queue inbound email.

Superior filter quality and efficiency

Our spam filter process tons of emails per second. We offer incoming filters that provides you more accuracy.

Enhance resource effectiveness

Our superior level incoming filter functions in your mail infrastructure, and you no longer require to handle such a huge number of inbounding mail spam.

Strengthen employee productivity

Using this Spam filter, your quality time is preserved and thus you can concentrate fully on your business work.

Process carried out in SixthStar’s Incoming spam filter

Filtering Technology

SMTP Level Filtering

Data Level Filtering

Start Inbound


Add domain

Configure MX record

View incoming Bandwidth overview

View incoming delivery queue

Incoming whitelist filtering rules

Domain rules

Admin rules

Default rules

Global rules

Inherited rules

Query rules

Add incoming whitelist filtering rules

Incoming Blacklist filtering rules

Domain rules

Admin rules

Default rules

Global rules

Inherited rules

Query rules

Add Incoming Blacklist filtering rules

View incoming log search

Filter incoming mail


Create email scout report

View spam quarantine

Enable the quarantine

Access the quarantine

View Domain level incoming spam quarantine

View Email Level spam quarantine

IMAP Access

IMAP folders

Message queueing

Automatic retry schedule

Message queued

Your own fallback server

Manage domain alias

Add domain alias

Configure domain settings

Rejected local part characters

Advanced settings

Manage destinations

Add destinations

Perform Network checks on destination server

View domain statistics

Train spam

Train not spam

Report spam

Clear callout cache – incoming

Set up whitelist filtering rules domain level

Set up blacklist filtering rules domain level

Technical Features of Incoming Spam Filter

Dual deployment options

You can pick our hosted cloud spam filter or incorporate the incoming filter immediately into your cloud hardware locally.

Integration and automation

SixthStar offers pre-built accomplices to completely incorporate the incoming filter with significant control panels and other email collaboration tools such as


Odin Service Automation

Direct Admin



Supported mail server

Our spam filter solution is completely independent and assists any SMTP consistent mail server like

Zimbra mail

Exchange mail filter

Postfix mail filter




Full support and updates

The incoming spam filter is entirely monitored, maintained and updated by our expert team and synchronize with our worldwide centralized database.

Quarantine and reporting

In order to verify the status of any email, we provide an extensive log-search tool with progressed quarantine options. These quarantine options can be displayed through IMAP via web.

Delivery queue

We provide an additional redundancy level in spam filter when required destination server become unreached. The queued mails are forced to the receiver end mail server when approachable again, thus it avoids email from being lost or pushed back to the sender.


In this incoming spam filter, there is an availability of multi-level central web interface that provides access to various permission levels, branding choices and other functional capabilities like user detection, whitelisting tools, blacklisting tools and attachment management.

Why select SixthStar Outgoing Spam filter?

SixthStar provides cloud-based outgoing spam filter that verifies and blocks spams to provide the most secured email delivery. Using the outgoing spam filter, you can easily remove mail delivery issues caused by IP address blacklisting.

Evade IP blacklisting

The utilization of outgoing spam filter will help you to get free from network-oriented issues and reduces the time spent on ordering the spam mail.

Defend your brand and infrastructure

We ensure positive client prestige by providing them with an excellent and complete email solution with integrity.

Enhance abuse operability

Our outgoing spam filter provides neat and clear reports denoting, which users’ needs your consideration, and systematically locks them.

Avoid heavy fines

Nation-wide legislative and control organization established a rule that is to pay heavy fines for Sending out harmful emails.

Process carried out in SixthStar’s Outgoing spam filter

Start outgoing filtering

Create outgoing user

Configure the abuse report address

Configure outgoing delivery IP

Set up SPF

Set up DKIM

Set up your SMTP Hostnames

Configure your MTA

Connection Limits

Available Outgoing ports

Block Outgoing Traffic on port 25

Outgoing License Size

How to count users/domains?

Configure your MTA


PostFix iP authentication

PostFix per Username authentication

PostFix Sender-based routing

cPanel/WHM User-based authentication

cPanel/WHM IP-bases authentication

cPanel/WHM IP-based authentication for selected domain

Exim IP based authentication

Exim Username based authentication

Microsoft Exchange





Outbound spam monitoring

Control panel quarantine (only for Local Cloud)

Managing outgoing spam

Automatic and manual locking

Alternative reporting

View outgoing bandwidth overview

Manage identities

Add identities

Manage outgoing user

Add an outgoing user

Edit an outgoing user

Outgoing Identity setup

Setup Outgoing user authentication for multiple domains with same IP address

Generate outgoing report

View outgoing blacklist filtering rules

Domain rules

Admin Rules

Default Rules

Global Rules

Inherited Rules

Query Rules

Add an outgoing blacklist filtering rules

Outgoing Log Search

Filter outgoing mail


Create email scout report

DKIM Certificate generation

Manage outgoing settings

Clear Callout cache – outgoing

View domain statistics outgoing

Technical Features of Outgoing Spam Filter

Dual deployment

The outgoing spam filter can be given either in the hosted cloud or into your system hardware locally based on your needs. Additionally, it can be utilized as an outbound SMTP server or redirect all outgoing traffic via the system.

Integration and automation

We offer a pre-designed add-on to completely merge outgoing spam filter with significant control panels and other email collaboration tools like


Odin service automation

ISP system




Supported mail servers

Our email solutions entirely support any of the SMTP based mail servers like

Zimbra mail

Postfix mail filter




Exchange mail filter

Reports and support

Apart from ARF reports and automatic locking, we also hold ties with RBL operators and security firm with business.

Software updates and maintenance

Don’t spend your quality time in doing administrating work for your system. Our expert professional team will completely take care of your system.


SixthStar’s spam filter has user-friendly interface provides various permission stage, branding choices, new user/account discovery, blacklisting tools, whitelisting tools etc.

Essential Features of Email Filtering Services

We substantially illustrate immense verifiable levels of spam and virus detection service for your business. The steps to be followed:

How email identified as spam - quarantined, tagged and delivered.

Rate of false positives - number of authenticated emails get blocked.

Reporting options - The reporting options are available to detect whitelist and blacklist senders.

Filtering and testing - To accelerate the filtering process, front end test is conducted.

Virus protection - Best antivirus software protects your business from malware activities.

What Makes Us Unique?

Simple to Use

Users can easily maintain and transfer your messages through the network within a short span of time.

More Detection Rate

The virus and malwares were detected precisely and can be prevented before entering into network.

Email Flow

We offer an additional protective layer for incoming filter in order to maintain the email flow.

Reporting portal

The reporting portal is useful to find out the whitelist and blacklist in a powerful way.

Antivirus protection

It detect, prevent and delete malwares and viruses that affects any part of the files or system.

Phishing prevention

The phishing protections is significantly required to protect users sensitive information from hackings.

Frequently Asked Questions

For inbound messages: This filtering will be done based on the IP address of the sender. As a default process, content-filter spam is sent to the junk folder of the recipient. All these actions can be controlled by you. For outbound messages: Here the emails delivery status can be easily known by the sender whether the email is bounced or not delivered through a message status.
Once you get the spam filter service it will be automatically enabled as per anti-spam policies. If you want any alteration in the policies based on your organizational structure you can tailor it according to it.
Yes, the service provides URL filtering. If the read URL has any spam content then it will be marked as a spam message.
This email filtering works differently for new and migrated customers. So make sure if the service is automatically enabled or not.
Yes, you will get spam reports about the volume of messages present in the account.