Content

Content Checks

Block on size

Email over the specified size will be blocked

Example interface:

Options:Off, Block

Default:Off

if greater than

The blocker will block any email greater than this size. The size includes any attachments.

Example interface:

Range1 - 256000 Kbytes

Default:1024 Kbytes

Max size to check

The blocker can be set to only check email less than a certain size. This setting can be used to make processing more efficient. Larger email are allowed through the blocker unchecked.

Example interface:

Default:10000 Kbytes

Check up to

The blocker can be set to only check up to this amount of an email. This setting can be used to make processing more efficient. Any content phrases matches must appear within this amount of content from the start of the email to be found.

Example interface:

Default:32 Kbytes

Content

This list allows the configuration of subject matching expressions. When an expression matches it will perform the action specified for the expression. The expression type shows the type of expression the expression matching engine will use for the entered expression.

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

- The email MUST have one of these expressions

- If matched these expressions block 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

Edit

Edit the selected expression

Delete

Delete the selected expression(s)

Import

Import expressions from a file using the current action

Export

Export the selected expressions to a file

Context Menu:(Right click selected items)

Expressions file

Expressions can be loaded from a file for us in content matching. Specify the list of expressions and then the action type for the expressions on each line of a CSV file. The actions are Block, Allow, MustHave. See example for more information

Example interface:

Example: *Match*,*product ID*,Block *Other*,*another*,Allow *_outbound_*,Musthave

Attachments

Attachments to the email that match the extensions defined

Example interface:

Options:Off+Block+Detach

Default:Off

With extensions

Wild cards for identifying attachments to be blocked, by blocking attachments with the default extensions you can help slow the spread of virus and worms

Example interface:

Default:*.scr,*.bat,*.com,*.js,*.vbs,*.pif,*.exe,*.jar,*.adp,*.app,*.asp,*.bas,*.bat,*.ce,*.cmd,*.cnt,*.com,*.cpl,*.crt,*.csh,*.de,*.exe,*.fxp,*.gadget,*.hlp,*.hpj,*.hta,*.inf,*.ins,*.isp,*.its,*.js,*.jse,*.ksh,*.lnk,*.mad,*.maf,*.mag,*.mam,*.maq,*.ma,*.mas,*.mat,*.mau,*.mav,*.maw,*.mda,*.mdb,*.mde,*.mdt,*.mdw,*.mdz,*.msc,*.msh,*.msh1,*.msh2,*.mshxml,*.msh1xml,*.msh2xml,*.msi,*.msp,*.mst,*.ops,*.osd,*.pcd,*.pif,*.plg,*.prf,*.prg,*.pst,*.reg,*.scf,*.sc,*.sct,*.shb,*.shs,*.ps1,*.ps1xml,*.ps2,*.ps2xml,*.psc1,*.psc2,*.tmp,*.url,*.vb,*.vbe,*.vbp,*.vbs,*.vsmacros,*.vsw,*.ws,*.wsc,*.wsf,*.wsh,*.xnk,*.ade,*.cla,*.class,*.grp,*.ja,*.mcf,*.ocx,*.pl,*.xbap,

Importing data

Press the import button, also shown as >> when the interface is small, to import data into the list.The following file types are supported:

        CSV (Comma delimited) (*.csv)
        Text (Tab delimited) (*.txt)
        All Files (*.*)

The data should be separated by commas, tab characters or newlines.
Each data entry must match the validation wildcard '*.*'. Entries that do not match will be discarded.
Duplicate entries are not imported more than once.

With names

Wild cards for identifying attachment names to be blocked

Example interface:

Example:malware*.doc,IMG_*.pdf

Block files within compressed archives

Example interface:

Default:false

Example:true