FilterPoint can auto-reject "suspicious" emails before they are even
accepted for further evaluation. We call this Auto-Rejecting. Please
note that Auto-Rejecting occurs "at the gate" before mail is even
processed by the rules you establish in the "What to do with Mail"
section. Any messages that are mail rejected cannot be redirected or
forwarded -- they were never accepted in the first place.
FilterPoint always refuses these types of messages:
Messages from servers falsely claiming to belong to FilterPoint.com
Messages with an unknown domain in envelope return address
(i.e., the message cannot be bounced)
Messages from servers that attempt to dump mail without waiting
for proper replies
Messages which match some easily identified virus signatures
Messages from dialup addresses at ISPs that identify them
as ineligible for sending email.
In addition, there are various Auto-Reject Levels available
to you.
None
This block level adds no additional blocking features for your entire
domain.
Low (recommended)
This auto-reject level will only block remote servers that are known to have
open relays
or
open proxies
. This is the setting
recommended by FilterPoint.
Medium
Medium auto-reject will do everything that the low level will
do, plus it blocks servers used by well-known professional spammers and
rejects forgeries of commonly faked domains, such as aol.com and
yahoo.com. This is very effective, but on rare occasions
results in some legitimate mail being blocked. This setting is
usually safe to use.
High
High auto-reject adds to the medium level validation of incoming
mail against several
strict technical checks which most spam sending software will fail.
Because of the vast number of poorly-configured mail servers out on
the Internet, this may block legitimate mail. Use this setting with caution.
Messages that pass your defined level of blocking will be passed to
the filtering system.