Lantronix XPort AR manual Priority Levels, DNS Records, Extended Hello, Email Statistics

9: Using Email

Priority Levels

The default priority level for the XPort AR’s emails is Normal priority. The XPort AR has 5 configurable priority levels; certain recipient systems have filters based on these priority levels.

Configurable priority levels are:
Priority	XPriority Level
Urgent	1
High	2
Normal (default)	3
Low	4
Very Low	5

Some email programs may translate an Urgent priority to High, and Very Low priority to Low.

The XPort AR makes an SMTP connection to a destination server. By default, it connect to the destination’s port 25. Override this port number by using the Server Port command.

DNS Records

Domain Name Service (DNS) translates text-based domain names to the numeric IP addresses necessary for locating the domain's server on the Internet. Many DNS servers have multiple records per domain. To resolve these addresses, the XPort AR’s DNS server listing looks for MX records first. MX is the Mail Exchange Record; it is an entry in the domain name table identifying the mail server responsible for managing emails for that domain name.

If the MX record is not available, then the DNS server uses the default record. If it cannot find the default record, it will not send the email.

Extended Hello

When the XPort AR makes a connection to the recipient’s SMTP server, it send an EHLO message. This message contains the XPort AR’s domain.

Use the Overriding Domain command to change the domain provided in the EHLO message.

For a more information EHLO, see RFC 2821.

Email Statistics

Use the “Show Statistics” command to display the XPort AR’s email statistics.

XPort AR User Guide 129