You
can block an e-mail using spam filters. There are many definitions
of spam, but one particularly useful one is the following:
Spam
is the electronic version of junk mail, and has been around since
the Internet was created. E-mail filters are a way of filtering
your e-mail to remove unwanted mail based on a variety of criteria.
You can block any sort of e-mail, not just mail of a commercial
nature. Blocked mail can be deleted automatically or sent to another
e-mail address or script. These filters are quite flexible - some
examples are provided after the instruction on how to add a spam
filter below. All filters are cumulative.
Useful
spam links:
Also
refer to Spam Assassin for another
approach to dealing with spam.
To
add an e-mail filter:
-
Click
on the E-mail Filtering link in the Mail area.
-
Click
on the Add Filter link.
-
Click
on the required header field in the first drop-down list. These
are the various fields in any e-mail message.
-
Click
on the required filter action in the second drop-down list.
This action will act on the text entered in the third field.
-
equals
- match the text exactly (whole words only). "Credit" will
block "Credit".
-
matches
regex - matches the text based on regular expression
(regex) rules. Regular expressions are a powerful but complex
area. You do not need to use regular expression filters
for most circumstances. Refer to these two good introductory
tutorials - Using
Regular Expressions and Learning
to Use Regular Expressions - for more information.
-
contains
- match the specified text in any circumstance. "porn" will
block "porn" and "pornography".
-
begins
with - match the specified text when it is the
beginning of a word. "porn" will block "porn" and "pornography"
but not "teenporn".
-
Enter
the filter text in the third field. This text is case sensitive.
-
Enter
the destination for the filtered e-mail in the Destination
field. There are three separate types of destination:
-
Destroy
the e-mail - Enter Discard in
the field.
-
Redirect
to another address - Enter the e-mail address to
which to redirect the e-mail.
-
Redirect
to a script - Enter the full script path on the
machine that hosts your web site.
-
Click
on the Activate button.
Example:
-
To
redirect all e-mail from "john@paradise.net", enter: From,
equals, john@paradise.net,
david@corse.org.nz
-
To
delete all e-mail from paradise.net, enter: From,
contains, paradise.net, Discard
-
To
delete all references to pornography, enter: Any Header,
contains, porn, Discard
-
To
discard all e-mail that Spam Assassin has marked as spam, enter:
SpamAssassin Spam Header, begins with,
yes, Discard
Topics:
Deleting
an e-mail filter
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