D-Link NetDefend DFL-260E, Log Reference Manual

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Context Parameters Connection
ALG Module Name
ALG Session ID
2.1.54. max_smtp_sessions_reached (ID: 00200150)
Default Severity WARNING
Log Message SMTPALG: Maximum number of SMTP sessions (<max_sessions>) for
service reached. Closing connection
Explanation The maximum number of concurrent SMTP sessions has been
reached for this service. No more sessions can be opened before old
sessions have been released.
Gateway Action close
Recommended Action If the maximum number of SMTP sessions is too low, increase it.
Revision 1
Parameters max_sessions
Context Parameters ALG Module Name
2.1.55. maximum_email_per_minute_reached (ID: 00200151)
Default Severity WARNING
Log Message SMTPALG: Maximum number of emails per client and minute
reached.
Explanation Client is trying to send emails at a rate higher than the configured
value.
Gateway Action session_rejected
Recommended Action This can be a possible DOS attack.
Revision 2
Parameters sender_email_address
Context Parameters ALG Module Name
ALG Session ID
2.1.56. failed_create_new_session (ID: 00200152)
Default Severity CRITICAL
Log Message SMTPALG: Failed to create new SMTPALG session (out of memory)
Explanation An attempt to create a new SMTPALG session failed. The unit has run
out of memory.
Chapter 2: Log Message Reference
68