Testing the installation
Troubleshooting tools
FortiMail™ Secure Messaging Platform Version 4.0 Patch 1 Install Guide
Revision 2
165
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For example, when the FortiMail unit cannot reach the FDN or override server for
FortiGuard Antispam queries, the associated log message in the antispam log has a
severity level of
Notification
. If your severity threshold is currently greater than
Notification
(such as
Warning
or
Error
), the FortiMail unit will not record that log message, and you will
not be notified of the error. Often this error might occur due to temporary connectivity
problems, and is not critical. However, if you are frequently encountering this issue, you
may want to lower the severity threshold to determine how often the issue is occurring and
whether the cause of the problem is persistent.
Similar to how the FortiMail unit will not record log messages below the severity threshold,
if the FortiMail unit is not enabled to record event, history, antivirus, and antispam log
messages, you will not be able to analyze the log messages for events of that type. During
troubleshooting, be sure that log messages are enabled for the type of event that you want
to analyze.
To configure the severity threshold, go to
Log & Report > Log Setting > Log Setting
. To
enable logging of different types of events, select
Config Policy
on that page.
Greylist and sender reputation displays
If an SMTP client is unable to send email despite being able to initiate SMTP connections
to or through the FortiMail unit, and is receiving SMTP error codes that indicate temporary
failure or permanent rejection, verify that the SMTP client has not been temporarily
blocked by the greylist or sender reputation features.
To view the lists of SMTP clients and their statuses with those features, go to
AntiSpam >
Greylist > Display
and
AntiSpam > Sender Reputation > Display
, respectively.
Mail queues and quarantines
If email has not successfully passed to or through the FortiMail unit, but you have been
able to successfully initiate the SMTP connection and send the email and have not
received any SMTP error codes, verify that delivery has not been delayed and that the
email message has not been quarantined.
To view the mail queues, go to
Mail Settings > Mail Queue
, then select a mail queue tab.
To view the per-recipient or system quarantine, go to
AntiSpam > Quarantine
, then select
either the
Recipients
or
System Quarantine
tab.
Packet capture
Packet capture, also known as sniffing, records some or all of the packets seen by a
network interface. By recording packets, you can trace connection states to the exact point
at which they fail, which may help you to diagnose some types of problems that are
otherwise difficult to detect.
Note:
If this menu path is not available, first select
Advanced >>
to switch to the advanced
mode of the web-based manager.
Note:
If these menu paths are not available, first select
Advanced >>
to switch to the
advanced mode of the web-based manager.
Note:
If these menu paths are not available, first select
Advanced >>
to switch to the
advanced mode of the web-based manager.
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