Spam Assassin is a facility you can enable on your server to detect and deal with Spam, it has a great number of features. For the main features check the rest of the details in this section.

Go into your control panel and under the E-Mail heading click on Spam Assassin. This will open up the Spam Assassin configuration page and you can configure it. Most of the buttons are self explanatory.


Click on Configure to make Spam Assassin work harder for you!
 

There are a great number of options but the main ones can be set by clicking on the large button at the bottom of the Spam Assassin configuration page that says Configure Spam Assassin.
You can set up the main options,
The required_hits is the score needed before the filter decides if the message is spam, you can experiment with this but for multi user domains you may like to set this between 8 and 10, for personal accounts you could set it to between 5 and 8. The lower the number the more messages are likely to be tagged as spam, but you have to offset that against the likelihood of good messages getting tagged.
rewrite_subject can be set to 1 or 0, if set to one any message detected as spam will have the subject modified by adding whatever you put in the subject_tag option. If set to zero the subject will not be altered.
The other items have brief descriptions but before using any of these it is recommended that you read up the documentation on Spam Assassin available from Spam Assassin , unfortunately this is rather complex. Basically however you can alter the scores assigned to various items, blacklist domains that are giving you problems or whitelist domains or addresses that get detected as spam when they are not.

Three is the best setting I have found.   I do not use the spam box !



 

This is a list of domain names that you do not want to receive mail from, any domain entered in these fields will ensure that mail from them is always tagged as spam and filtered accordingly.

This is a list of domain names that you never want to be detected as spam, sometimes Spam Assassin can think mail is spam when it is not, by entering a mail address or domain name here you can ensure that mail from these sources is not tagged as spam, you can use either a full mail address such as user@domain.com or a whole domain such as *.domain.com

Spam Assassin works by scoring each message according to a set of rules, in nearly all cases you can use the default set, but if you have a particular problem you can alter the scoring, all these rules are listed in the Spam Assassin documentation at Spam Assassin. However you are cautioned to be careful when altering the rules.

If you do not turn on the spam box but have Spam Assassin enabled then all mail will continue to be delivered to the main POP account for that address, the subject can be tagged or not according to the option you have set. If the spam box is enabled then anything detected as spam by Spam Assassin will be diverted away to a separate folder so you only get good messages in your main account. If you want to look at the spam you can either download it to a POP mail client such as Outlook Express using your user name with /spam added and the normal POP account password, so if you want the spam for the account myaccount@mydomain.com then you use the user name myaccount@mydomain.com/spam and the normal password for the myaccount@mydomain.com account. Alternatively you can access your webmail and use Horde to read your mail, in this case you can select the spam account from the drop down box in the top right hand corner when you are in the INBOX.
Important - if you set up the Spam Box the folder for the spam is not set up until after the first spam is received into the account, so you will not be able to access the spam folder by POP or using webmail until after that first spam mail is identified.