Expressions

There is an overview of the SPAM Blocking process here.

   Expressions

Content Expressions

This list allows the configuration of content matching expressions. When an expression matches it will perform the action specified for the expression. The expression type shows the type of expression the matching engine will use for the entered expression. Expressions have a built in precedence: Allow > Delete > Block > Mark > Weight Remember that your SPAM Blocker/Action settings may globally preclude one or more of these actions.

Expression types:

sub

Case insensitive substring

Specify as

simply "match" or "sub(match)"

Example

sub(mail) matches the phrase "Hexamail produces server software"

SUB

Case sensitive substring

Specify as

"SUB(match)"

Example

SUB(mail) does not match the phrase "HexaMail produces server software"

cmp

Case insensitive exact match

Specify as

"cmp(match)"

Example

cmp(mail) matches ONLY the entire exact string "mAil"

CMP

Case sensitive exact match

Specify as

"CMP(match)"

Example

CMP(mail) matches ONLY the entire exact string "mail"

word

Case insensitive word match

Specify as

" match " or "word(match)"

Example

word(mail) does not match the phrase "Hexamail produces server software" but does match the phrase "Hexamail produces mail server software"

WORD

Case sensitive word match

Specify as

"WORD(match)"

Example

WORD(Mail) does not match the phrase "Hexamail produces mail server software" but does match the phrase "Mail server software produced by Hexamail"

wild

Case insensitive wild match

Specify as

"*m?tch*" or "wild(*m?tch*)" (? - single character match, * - multiple character match)

Example

Example wild(*v?agra*) matches the phrase "Hexamail does not ship v1agra"

Note

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"

WILD

Case sensitive wild match

Specify as

"WILD(m?tch)"

Example

WILD(*v?agra*) does not match the phrase "Hexamail does not ship V1agra"

Note

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"

reg

Regular expression

Specify as

"reg(expression)"

Example

can be found at the website
http://www.regular-expressions.info/

REG

Case sensitive regular expression

Specify as

"REG(expression)"

Example

can be found at the website
http://www.regular-expressions.info/

BOOL

Boolean expression

Specify as

"BOOL(expression)"

Example

BOOL(wild(*viagra*) AND wild(*ph?rm?cy*) must match both wild matches to be considered an overall match. Brackets may be used.

Note

Brackets allow nested clauses in a BOOL expression

Add #NN to any weighting expression to multiple the weight by the number NN

Icon key:

 - If matched these expressions allow the email

 - If matched these expressions add weight to the email score

 - If matched these expressions mark the email

 - If matched these expressions block the email

 - If matched these expressions delete the email

Column Headings:(Click the heading to sort by the column)

Expression

The expression

Action

Action the expression has

Type

Type of expression

Buttons:(Underneath control)

Add

Add an expression

Test

Test a phrase against the expressions

Edit

Edit the selected expression

Delete

Delete the selected expression(s)

Import

Import expressions from a file

Export

Export the selected expressions to a file

Context Menu:(Right click selected items)

Edit:

Edit the selected expression

Change to:

Change the expression action

-->

Allow:

Set the expression to Allow

Weight:

Set the expression to Weight

Mark:

Set the expression to Mark

Block:

Set the expression to Block

Delete:

Set the expression to Delete

Enable:

Enable the selected expression(s)

Disable:

Disable the selected expression(s)

Delete:

Delete the selected expression(s)

Internet Updated Phrases

The action to take if an Internet updated disallowed content phrase is found. The list of phrases is automatically maintained and downloaded from the Internet update site as required. These phrases and expressions very rarely give any false positives so blocking or deletion is recommended.

Example interface:

Options:
(More Info)Off, Weight, Mark, Block, Delete

Default:Block