ALTFORM : should be set a different email address than your usual email, but a valid address, and preferably one which DOES NOT forward to your normal email account. This is used to avoid giving spammers at some particularly egregious sites your usual email address, and to bypass blocks that some spammers and spam friendly sites will put to prevent your sending them mail if you complain often enough and effectively enough. Change this address frequently to defeat these filters.
BLOCKREPLY : handles mail which the filter tags as probable spam, but which may contain some real email as well. Valid values are SILENT that deletes the email and NOTIFY that sends a notice and copy of his email back to the sender with instructions on how to bypass the Spam Filter if this email is not spam.
BYPASSWD : a password which, when included on the "Subject:" line of an email, causes the Spam Filter to pass the mail immediately into your incoming mail box without further filtering.
DULCHECK : if set to "Yes", tells the Spam Bouncer to check the Mail Abuse Prevention System (MAPS) Dial-Up List (DUL), which lists IP addresses that are part of ISP dial up pools, and block email sent directly to your system from these IP addresses. That will block a considerable amount of spam.
GARBLEDCHARSET : controls the GARBLEDCHARSET filter that tests for email non-Latin character sets and missing, wrong or corrupted MIME headers which should accompany any such character sets. The default for this variable is yes, which enables this filter. Users who expect to receive email in a non-Latin character set, or who find it is catching too much legitimate email, can set this variable to no to disable the filter.
CHINESE: Set CHINESE=yes if you receive email in Chinese. Otherwise leave it set to no (the default), and the Spam Bouncer will delete any email in this language.
JAPANESE: Set JAPANESE=yes if you receive email in Japanese. Otherwise leave it set to no (the default), and the Spam Bouncer will delete any email in this language.
KOREAN: Set KOREAN=yes if you receive email in Korean. Otherwise leave it set to no (the default), and the Spam Bouncer will delete any email in this language.
NOBOUNCE : tells the Spam Filter the email addresses and domains whose email you want the Spam Filter to skip filtering and deliver directly to you.
ORBSCHECK : If set to "yes", tells the Spam Filter to check the ORBS Relay blacklist, which lists IP addresses associated with mail servers which are open relays, or allow anyone from any part of the Internet to send email to any other part of the Internet. A relay listed in the ORBS blacklist has not necessarily been used to send spam; it merely can be used to do so. The ORBS blacklist is generally considered aggressive, and can result in blocking a considerable amount of legitimate email as well as spam if you correspond with people at sites which host an open relay. This variable is set to no by default. To enable ORBS relay testing, set it to yes.
RBLCHECK : if set to "Yes" tells the Spam Filter to check the Mail Abuse Prevention Sysem (MAPS) Realtime Blackhole List (RBL) which lists IP addresses associated with domains which have spammed repeatedly. Sites listed on the RBL are highly likely to be sources of spam and will rarely be sources of email you want to receive.
RSSCHECK : if set to "Yes" tells the Spam Filter to check the MAPS RSS Open Relay blacklist, which lists IP addresses associated with mail servers that are open relays and through which spam has been sent least once. This field is set to no by default. To enable SSR relay testing, set it to "Yes".
SPAMREPLY : specifies how to handle mail which the filter tags as definitely spam and should contain no valid mail. Options include SILENT that deletes the email, BOUCE that sends a simulated mailer-daemon bounce message to the spammer, and COMPLAIN that sends a complaint and a copy of the spam to the spammer's postmaster for spammers and in most cases also to the upstream ISPs, and BOTH that both sends a bounce and complains.
TURKISH: Set TURKISH=yes if you receive email in Turkish. Otherwise leave it set to no (the default), and the Spam Bouncer will delete any email in this language.