Smtp Settings - D-Link xStack DGS-3420 Series Reference Manual

xStack® DGS-3420 Series Layer 2 Managed Stackable Gigabit Switch Web UI Reference Guide

SMTP Settings

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 in the window 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.
Users can set up the SMTP server for the Switch, along with setting e-mail addresses to which switch log files can
be sent when a problem arises on the Switch.
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 from 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.
•
The maximum number of un-transmitted mail messages placed in the queue cannot exceed 30
messages. Any new messages will be discarded if the queue is full.
•
If the initial message sent to a mail recipient is not delivered, it will be placed in the waiting queue until
its place in the queue has been reached, and then another attempt to transmit the message is made.•
The maximum attempts for delivering mail to recipients is three. Mail message delivery attempts will be
tried every five minutes until the maximum number of attempts is reached. Once reached and the
message has not been successfully delivered, the message will be dropped and not received by the
mail recipient.
•
If the Switch shuts down or reboots, mail messages in the waiting queue will be lost.
To view this window, click Network Application > SMTP Settings as shown below:
328