BasicsSpam is unsolicited email on the Internet. It is a form of bulk mail from the sender's point-of-view and often sent to a list gathered from subscribers to a discussion group or obtained by companies that specialize in creating email distribution lists. In much the same way that retailers and businesses use postal mailing lists to send potential customers catalogs and other information, an increasing number are using e-mail messages as a direct marketing tool. In general, it's not considered good internet etiquette to send spam. It's generally equivalent to unsolicited phone marketing calls except that the user pays for part of the message since everyone shares the cost of maintaining the Internet.

Email spoofing is the practice of changing from field of an email so that it looks like the email came from someone or somewhere else. Email spamming may be combined with email spoofing, so that it is very difficult to determine the actual originating email address of the sender. Some email-distributed viruses use spoofing, such the Klez or Sobig virus, take a random name from somewhere on the infected person’s computer and mail themselves out as if they were from that randomly chosen address. Recipients of these viruses are therefore misled as to the address from which they were sent, and may end up complaining to, or alerting the wrong person. As a result, users of uninfected computers may be wrongly informed that they have, and have been distributing a virus.

Email phishing is the act of sending an email to a user falsely claiming to be an established legitimate business in an attempt to scam the user into providing private information. The email usually directs the user to visit a website where they are asked to update personal information, such as, passwords and credit card, social security, and/or bank account numbers. This website is bogus and set up only to steal the user’s information.

Some apparently unsolicited email is, in fact, email people agreed to receive when they registered with a site and a box was checked agreeing to receive postings about particular products or interests. This is known as both opt-in email and permission-based email.
How to Avoid Getting Spam

• Never post your real email address on a forum or bulletin board. Spammers use special programs which harvest these and use them to build spam lists. Once your email address has been caught in this way, you'll never get off the spam lists.
• Set up multiple email addresses. If you regularly sign up to a lot of web sites, which may sell email addresses as a source of revenue, consider having one email address just for this purpose, while keeping your other - real - email address private to friends and family.
• When you register with an internet site, make sure you do not give them the right to sell your email address to spammers. (Watch for little checkboxes and make sure to remove any which are checked by default).
• Use the email filters to reject spam with obvious catchphrases in it
• (debt consolidation, porn, sex, viagra, hot girls etc)
  

Dealing with Spam
If you suspect a message is junk mail, treat it as such by deleting it -- even without opening it. Common clues include information in the subject headings and unknown senders. Do take action to stop spam. Users can setup rules to filter the messages to stop spam messages and block spam sites.

All incoming email is now being scanned & tagged in an attempt to identify spam. Users will need to setup a filter to move messages tagged as spam. Please note that there is no foolproof way for system administrators to configure the campus-wide email system to determine spam and from valid email.

Please see related articles for how to deal with spam in particular programs.