User guide

Chapter 6 – RouteFinder Software
Multi-Tech Systems, Inc. RouteFinder RF850/860 User Guide (PN S000400E) 80
Proxy > POP3 Proxy > POP3 SPAM Filtering
Recipient White List
Enter the recipient email IDs that will not be checked for SPAM. For example, if all the emails
from the specific domain cde.com are not to be checked for SPAM, then the entry should be
@cde.com.
Once you enter the ID and click the Add button, the ID displays in a list below the entry field.
You may enter more than one email ID, and each ID can be deleted.
Authentic Networks
Select the network from which a user may retrieve unfiltered email. In other words, the email on
this network is not checked for SPAM. Select from Any, LAN, WANInterface, DMZ.
Once you select a network and click Add, the network displays in a box below this entry field.
You may select more than one network, and a network can be deleted whenever you want to
make a change.
Sender Black List
Enter a sender email addresses to be blocked. Then, if the sender’s email address matches any
entry in the list, the email will not be forwarded. If all emails from a domain are to be blocked,
add this @ symbol before the domain name:
[e-mail]
If you want to block all email from the domain routefinder. yourdomain.com, then add it as:
@routefinder.yourdomain.com
If you want to block all email from the domain routefinder. yourdomain.com, then add it as:
@routefinder.yourdomain.com
Blocked Networks
If the user tries to retrieve email from the network entered in the list, then that connection of
retrieving emails is rejected.
Check for NULL Sender
If this option is enabled, email with an empty sender address is marked as SPAM.
Bad Pattern in Sender Address
The sender email address will be checked to see if matches any of the patterns added the list. If
there is a match, then the email will be marked as SPAM.
Control Character: Asterisk (*) is a general pattern-matching character. For example, if the
entry is
xyz*@ abc.com, then all email from the domain abc.com with user names starting with xyz will
be marked as SPAM.
Message Filtering
If you check Message Filtering, three additional prompts display. File attachments and specified
expressions will be filtered.
Filter Attachments
Enter the file extensions to be filtered. Email containing these extensions in the
attachments will be checked as spam.
Examples might include files with these extensions: .bmp, .exe, .gif. Also, double
extensions such as tar.gz cannot be used.
The wild card ‘*’ cannot be used to filter all attachments.
Forced unzip is disabled.
Filter Based on Subject
Enter the mail subject header to be searched for the expressions added here. If there is
a match, that email will be considered as spam.
Example: If the subject Free is to be searched in the email, added the word free.
Filter Based on Message Expressions
The email message and body will be searched for the expressions added here. If the
expression “as is" is to be searched for in the email, add the words as is. If the entry is
to be used as a regular expression, the entry should be enclosed in < >.