Prolateral Consulting Ltd
Prolateral Consulting Ltd
Hosted SMTP Inbound
anti-spam filter
email protection

Prolateral offers primary and backup domain (DNS) services, with servers in key geographic locations providing the best service possible.

proFilter - FAQ

Please see below some frequently asked questions regarding our proFilter (inbound SMTP SPAM filtering service).

Our hosted anti spam solution blocks phishing, spyware and viruses from email before they reach your network thus protecting your email server and also preventing spam messages reaching your desktop software like Outlook, Entourage or Outlook Express.


profilter supports SMTP, POP and IMAP protocols so will work with all major mail servers.

This includes but not limited to:

  Microsoft Ecxhange
  Novell GroupWise
  Lotus Notes
  Mercury Mail
  Any many more...

No additional hardware or software needs to be installed or managed locally. The spam messages are blocked on the Internet saving you downloading your junk emails first.

This in turn lowers your bandwith usage and risk of virus infection. Plus with no additional services/apps running locally this saves you CPU resources and further memory overheads


profilter is a realtime service which means that messages are processed automatically as soon as they come in.

When profilter is not able to deliver email to the destination server, the email will be queued up to 5 days.  If you have gone into a disaster recovery mode and want us to store your email longer then simply lets us know by contacting the support helpdesk.

proFilter licensing is a 1:1 relationship with the number of mailboxes on the downstream server for that domain.

For example, If you had seperate mailboxes for User1, User2, User3 and a Info mailbox, that's 4 mailboxes so you would need a profilter5 package.

Yes, profilter will allow you to add & remove profilter-users up to the maximum of your license count.

If you find your domain is still receiving emails for a non-existent user and its just unwanted emails then that email address can be added to the spam-trap (A special user for letting profilter know this is unwanted emails).

If that email address does have real emails you still want then you either need to alias the address to another profilter-user or add the email address as an additional user license.

If you no longer want to use the profilter service you can cancel at anytime from within the secure clients area.

In the Secure Clients Area select the menu 'My Services'. Find the desired service you wish to cancel and select it. Then click on the button 'Request Cancellation'.

You will also need to remove the MX record from within your domain names DNS settings, please see the setup section or the support pages for additional information on setup and removal of the proFilter service.


We used to spend a considerable amount of time each day removing spam emails and junk from our inboxes. When we started using the Profilter anti spam solution, we now spend much less time sifting through the junk and use our time much more effectively.

Denise Comer, Kirkby and Diamond, Luton, Beds