Fortinet FortiMail 3.0 MR4 - Manual (Page 103)

set as greylist
FortiMail™ Secure Messaging Platform Version 3.0 MR4 CLI Reference
06-30004-0420-20080814
103
as greylist
Use these command to configure the greylist settings.
Syntax
set as greylist capacity
set as greylist exempt {add | delete}
set as greylist greylistperiod
set as greylist initial_expiry_period
set as greylist ttl
History
Keywords and Variables Description Default
capacity Use this command to set the maximum number of greylist items
stored in the greylist database. New items causing the greylist
database to grow larger than the set capacity will overwrite the oldest
item.
• is the maximum number of items in the greylist
database.
The default value and acceptable range varies by FortiMail model. To
display the currently set capacity, use the get as greylist
command.
To determine the available capacity range for your FortiMail model,
enter a question mark for the capacity value and execute the
command.
varies
exempt {add | delete} Use this command to add or delete addresses from the greylist
exemption list.
•
domain.
greylistperiod Use this command to set the length of time the FortiMail unit will
continue to reject messages with an unknown to/from/IP. After this
time expires, any resend attempts will have the to/from/IP data added
to the greylist and subsequent messages will be delivered
immediately.
• is the greylisting period in minutes. Acceptable
values range from 1 to 120 minutes.
20
initial_expiry_period Use this command to set the length of time after the initial message
that the FortiMail unit will keep record of a message with an unknown
to/from/IP. If the mail server resends a message before the initial
expiry period expires, it will be accepted. If the message is received
after the initial expiry period, the FortiMail treats the delivery as new
and rejects the message with a temporary fail.
Note that both the greylist period and the initial expiry period are
calculated from the time the first message is received and a
temporary fail is returned. Consequently, a 20 minute greylist period
and a 4 hour initial expiry period will result on a 3 hours and 40
minutes window for delivery of the message to fulfill the greylist
requirements and be accepted.
• is the initial expiry period in hours. Acceptable values
range from 4 to 24 hours.
4
ttl Use this command to set the greylist time-to-live (TTL) value. TTL
determines how long the to/from/IP data will be retained in the
FortiMail unit’s greylist. When the entry expires, it is removed and
new messages are again rejected until the sending server attempts
to deliver the message again.
• is the time to live in days. Acceptable values range
from 1 to 60 days.
10
FortiMail v3.0 New.