Hexamail Guard Administration Guide - SPAM Blocking - detection - Sender - DNS based lists

DNS based lists

Options for matching email using DNS based lists of sender domains

DNS based lists

   Sender domain (RHS)

DNS Domain lists
DNS based domain blocking lists can be used to match email sender domains and take an action if found. This helps to block email from known spam senders. Please consult the implementation guide for the lists you have configured and also any usage policies. In many cases lists are free to use only for a limited number of users or email per day. If you exceed the usage limits your server may be blocked from using the list or you may be required to pay a small fee to continue to use the list.
Case insensitive substring
simply "match" or "sub(match)"
sub(mail) matches the phrase "Hexamail produces server software"
Case sensitive substring
"SUB(match)"
SUB(mail) does not match the phrase "HexaMail produces server software"
Case insensitive exact match
"cmp(match)"
cmp(mail) matches ONLY the entire exact string "mAil"
Case sensitive exact match
"CMP(match)"
CMP(mail) matches ONLY the entire exact string "mail"
Case insensitive word match
" match " or "word(match)"
word(mail) does not match the phrase "Hexamail produces server software" but does match the phrase "Hexamail produces mail server software"
Case sensitive word match
"WORD(match)"
WORD(Mail) does not match the phrase "Hexamail produces mail server software" but does match the phrase "Mail server software produced by Hexamail"
Case insensitive wild match
"*m?tch*" or "wild(*m?tch*)" (? - single character match, * - multiple character match)
Example wild(*v?agra*) matches the phrase "Hexamail does not ship v1agra"
the * wrappers round wildcard expressions, you can also do wild(Start*) to match the phrase "Start of the content" but not match "the content starts here"
Case sensitive wild match
"WILD(m?tch)"
WILD(*v?agra*) does not match the phrase "Hexamail does not ship V1agra"
the * wrappers round wildcard expressions, you can also do WILD(*End) to match the phrase "The content End" but not match "the content ends here"
Regular expression
"reg(expression)"
can be found at the website
http://www.regular-expressions.info/
Case sensitive regular expression
"REG(expression)"
can be found at the website
http://www.regular-expressions.info/
Boolean expression
"BOOL(expression)"
BOOL(wild(*viagra*) AND wild(*ph?rm?cy*) must match both wild matches to be considered an overall match. Brackets may be used.
Brackets allow nested clauses in a BOOL expression
 - If matched these RHS list servers allow the email
 - If matched these RHS list servers add weight to the email score
 - If matched these RHS list servers mark the email
 - If matched these RHS list servers block the email
 - If matched these RHS list servers reject the email
(Click the heading to sort by the column)
List Server
The RHS list server
Action
Action of the RHS list server
Status
Status of the RHS list server
(Underneath control)
Add RHS list server
Edit the selected RHS list server
Delete the selected RHS list server(s)
(Right click selected items)