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Preventing Unsolicited Commercial Email (Spam)
The biggest problem affecting many internet service users is unsolicited commercial email, or "spam". The recommendations below will help you prevent your account from receiving junk email, and will help you block such email from reaching your inbox.
Use PortBridge's mail filters. PortBridge automatically blocks about 75% of all incoming junk email by providing basic spam filtering with RBL's, or "black lists" of known sources of junk email. We will block any mail coming to our customer from a mail server on one of the "black lists" that we use. These filters are turned on by default for all our customers.
To block the vast majority of the spam that makes it through our basic filter, you can configure and use our advanced spam filter. This filter works by analyzing each piece of incoming mail and assigns it a "spam score" based on how "spammy" that message appears. The more "spammy" the message, the higher the spam score. Messages that have a sufficiently high score will be caught by the filter; you can adjust how sensitive the filter is (i.e., how high the spam score can be before a message is caught) by adjusting the Aggressiveness setting of the filter. You can turn on and configure the advanced spam filter by going to webmail and clicking on My Account, then clicking on Spam.
Use your email program's mail filters. Most modern email programs such as Outlook Express and Netscape Mail have built-in filtering systems, through which you can block incoming mail based on words in the body, subject, and address lines of the message. These filters are useful for blocking mail that appears to be legitimate to our spam filter. You can also use these filters to automatically organize legitimate incoming email into folders. For instance, you could create an email program filter that collects any email from your cousin in Tulsa and delivers it directly to a special email folder in your computer's email inbox. Below are links to help you configure mail filters in the most popular email programs:
Protect your email address. Your email account will receive significantly more spam if you allow your email address to be "revealed" to spammers. Since spammers routinely sweep web sites and other online public records for email addresses, listing your email address on a web site or some other publicly viewable online document (such as a Network Solutions WHOIS domain name registration record) will probably cause you to get more spam. Avoid listing your email address in this way if possible. Providing your email address when filling out an online form, especially on the web site of a person or company that you do not know or trust, will probably cause your email address to end up on a spammer's mailing list. Remember that many companies share their customers' email addresses with other organizations. Many users keep two email addresses, a "public" address which they know will get spammed and which they use only infrequently, and a "private" one which is only used for personal correspondence.
