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DES-3010F/DES-3010FL/DES-3010G/DES-3016/DES-3018/DES-3026 Fast Ethernet Switch Manual
75
SMTP Service
SMTP or Simple Mail Transfer Protocol is a function of the Switch that will send switch events to mail
recipients based on e-mail addresses entered using the commands below. The Switch is to be configured as a
client of SMTP while the server is a remote device that will receive messages from the Switch, place the
appropriate information into an e-mail and deliver it to recipients configured on the Switch. This can benefit
the Switch administrator by simplifying the management of small workgroups or wiring closets, increasing
the speed of handling emergency Switch events and enhancing security by recording questionable events
occurring on the Switch.
The Switch plays four important roles as a client in the functioning of SMTP:
• The server and server virtual port must be correctly configured for this function to work properly.
This is accomplished in the SMTP Service Settings window by properly configuring the SMTP
Server Address and SMTP Server Port fields.
• Mail recipients must be configured on the Switch. This information is sent to the server which then
processes the information and then e-mails Switch information to these recipients. Up to 8 e-mail
recipients can be configured on the Switch using the SMTP Service Settings window by configuring
the Mail Receiver Address field.
• The administrator can configure the source mail address from which messages are delivered to
configured recipients. This can offer more information to the administrator about Switch functions
and problems. The personal e-mail can be configured using the SMTP Service Settings window and
setting the Self Mail Address field.
• The Switch can be configured to send out test mail to first ensure that the recipient will receive e-
mails from the SMTP server regarding the Switch. To configure this test mail, the SMTP function
must first be enabled by configuring the SMTP State in the SMTP Service Settings window and then
by sending an email using the SMTP Service window. All recipients configured for SMTP will
receive a sample test message from the SMTP server, ensuring the reliability of this function.
The Switch will send out e-mail to recipients when one or more of the following events occur:
• When a cold start occurs on the Switch.
• When a port enters a link down status.
• When a port enters a link up status.
• When SNMP authentication has been denied by the Switch.
• When a switch configuration entry has been saved to the NVRAM by the Switch.
• When an abnormality occurs on TFTP during a firmware download event. This includes in-process,
invalid-file, violation, file-not-found, complete and time-out messages fro
m the TFTP server.
• When a system reset occurs on the Switch.
Information within the e-mail from the SMTP server regarding switch events includes:
• The source device name and IP address.
• A timestamp denoting the identity of the SMTP server and the client that sent the message, as well as
the time and date of the message received from the Switch. Messages that have been relayed will
have timestamps for each relay.
• The event that occurred on the Switch, prompting the e-mail message to be sent.
• When an event is processed by a user, such as save or firmware upgrade, the IP address, MAC
address and User Name of the user completing the task will be sent along with the system message of
the event occurred.
• When the same event occurs more than once, the second mail message and every repeating mail
message following will have the system’s error message placed in the subject line of the mail
message.
The following details events occurring during the Delivery Process.
• Urgent mail will have high priority and be immediately dispatched to recipients while normal mail
will be placed in a queue for future transmission.