Frequently Asked Questions - Spam & Virus Filter

The mailfilter box will send this type of email to a user when it quarantine's the first email. You just need to click on the link and then you will be given a choice to deliver or delete any of the quarantined email.

Messages that are obviously spam are deleted while suspected spam is marked with [SPAM] in the message header.

Our Enterprise Customers are also given the chance to set up a quarantine where suspect email is sent. The first time an email is sent to quarantine you will receive an email with a link to access the folder. From there you can delete messages, deliver them, classify them as spam, or add them to your whitelist (i.e. classify them as not being spam).

Our spam firewall examines all the characteristics of a message and uses a complex system of scores to determine whether a message is spam. When an email reaches the spam scoring filter, our spam firewall assigns scores to all the properties of the message.

For example, the spam firewall examines:

  • A message's header and subject line for offending characters or words
  • The percentage of HTML in the message
  • Whether a message contains an 'unsubscribe' link

These properties (along with many others) help the spam firewall determine a message's spam score. Our spam rules and scores are kept up-to-date so we can quickly counteract the latest techniques used by spammers.

Spam and virus filtering is already setup for all domain hosted on Dynamic's shared servers.