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OFFICE-LOGIC INTERCHANGE JUNKMAIL
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Office-Logic InterChange now includes White List - Challenge Response SPAM blocking technology that will eliminate
100 percent of automated Junk Mail from cluttering your users mailboxes.
When an inbound message is received by Office-Logic InterChange, and before the message is delivered to the local
user, Office-Logic InterChange will verify that the senders e-mail address is listed in either the local users White
List, Personal Address Book, or Global Address Book.
If the senders e-mail address is listed, then their message will be delivered immediately to the local users Inbox.
If the senders e-mail address is not listed in the local users White List, Personal Address Book, or Global Address
Book, then the message gets stored in a DETAINED folder in the users mailbox. Office-Logic InterChange will then
send a Challenge Message back to the sender that includes a link to verify their address and release their message
to your local user. When the sender selects the link in their Challenge Message, their original message is released
from the local users DETAINED folder into their Inbox. The senders e-mail address is then automatically added to the
local users White List. Each sender has to verify their address only once per local user, and your administrator
and local users do not have to do anything if they don't want to.
If the sender does not release their message, which automated Junk Mail services will not have the capability or
resources to do, then the message is automatically deleted from the local users DETAINED folder after a configured
number of days (default is 10 days).
If a message is released that you still consider to be Junk Mail, then you can Block List that e-mail address from
sending you messages in the future. Local users can also go into their DETAINED folder at any time and manually
release, Block List, or Delete any message. Users can easily propagate their White List or Block List by selecting
one or several messages at a time and then clicking on the ALLOW or BLOCK icon.
Office-Logic InterChange and Office-Logic Groupware will allow users to easily add or modify e-mail addresses to
their White List or Block List. The White List - Challenge Response SPAM blocking technology in Office-Logic
InterChange does not require a lot of monitoring or administration, and is the best solution for blocking unwanted
Junk Mail with the least chance for errors or false positives on the market.
Office-Logic InterChange also includes another level of SPAM filtering called Grey Listing. The Gray List feature
depends on increasing the cost of junkmail mail delivery by taking advantage of the current behavior of most
"junkmail servers" in that they don't retry delivery of messages to servers that refuse the connection. Each time a
particular sender attempts delivery to a particular recipient from a particular IP address range, Office-Logic
InterChange looks for the "triplet" of information in its database. If it is the first attempt, it will be added to
the database and the sending server will be given a "451 Server busy. Please try again later." message and the
attempt terminated. On the second attempt, if it is found to fall within the time window (i.e., more than 59 seconds
and less than 4 hours) the message will be delivered. If it tries too quickly (i.e., less than 59 seconds) it will
be again rejected as "early" or too late (i.e., more than 4 hours) it will be rejected as "late". Once the triplet
is allowed to deliver a message, it will continue to be allowed unless there is no further attempts for more than 36
days. In which case the process will begin again.
While this mechanism doesn't stop all junkmail and it does cause an initial delay (the amount is dependent on the
sending servers operation), it has proven to be very effective at stopping a substantial amount of junkmail.
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