Email Filtering

Spam and virus emails are a big issue these days so it’s important to do all your can to avoid receiving unwanted emails. Filtering at the server can help but you should never be under any illusion that this will stop all of them. Infact spammers know the systems used and it’s a constant battle between spammers and filtering systems to regain the upper hand (it’s war!). You should see the mailserver filtering as your just your first line of defence (followed by Anti-Virus software and then your mail clients own filtering).

Mail filtering is available when you have our Adv. Email or Hosting services. It works on mailboxes aswell as forwarding addresses but it doesn’t work on emails forwarded to a recipient address running filtering (they are simply not filtered at the recipient end).

You can set filtering rules per recipient or use the default filtering rules over all your recipients or just some. We recommend you use the default filtering option for all your recipients and only set specific filtering on recipients that perhaps require different settings like if they receive attachments that would otherwise be blocked.

1. Editing the default filtering

The default settings effect all the recipients with an asterick in the filter column. To edit or activate the default filtering then simply click the Edit default filter settings button. Make changes and click Save changes to activate the new settings.

2. Editing individual filtering settings

To edit individual filtering or to switch a recipient to it’s own settings then simply click the Yes/No filter link associated with that recipient. Make changes and click Save changes to activate the new settings.

3. Setting a recipient back to the default settings

To set a recipient back to using the default settings then simply click the Yes/No filter link associated with that recipient and then click the Revert to defaults button that will be at the bottom left just after the filtering settings.

Filter settings explained

We talk about the mail scoring below. This is a value that is assigned to each message based on a number of critea within our filtering system. The filtering system is constantly updated so it’s impossible to give you details of how messages are scored but it will largely be based on content (inc. embedded images and URLs), subject line and originating servers. So for example a email with embedded images, URLs etc., would be scored higher (more likely spam) than a message without this sort of content. Currently we recommend blocking on a score of 6.3 which doesn’t mean ‘good’ emails won’t be above this score just less likely.

Enable checking

This box must be ticked for any of the settings to be active.

Message marking

Marking score

The marking score is used in association with the Subject line prefix. This allows you to show the filter score for a particular email by adding it to the subject line.

Message blocking

Block spam

Set to enable SPAM blocking.

Blocking score

If the Block spam box is ticked then this is the score at which messages with this score or above are blocked.

Quarantine spam to

Instead of just discarding blocked messages, forward them to this email address for later checking. This should only be used to forward SPAM to an address you have access to and which is cleared regularly.


Block executables

Tick this box to bounce messages which contain executable attachments.

Block viruses

Tick this box to discard messages which contain viruses.

White/Black list

Email addresses

The White/Black list allows you to bypass the spam filtering for specific addresses or whole domains. Whitelisting an address will force the message to be accepted and no scoring applied to it. Blacklisting an address will cause the message to automatically be marked as spam.