AirLive RS-3000 User Manual
Page 164
To introduce the delivery procedure of the mail by two Send and Receive way:
If the user wants to send the mail, the steps can be divided as follows:
Use MUA to send mail to MTA: Enter the following setting while the user write e-mail by MUA:
1. The e-mail address and the mail server of the sender (To receive the MTA that sent by MTA
from the sender)
2. The e-mail address and the mail server of the recipient (To receive the MTA that sent from the
external master)
After the user writing e-mail by MUA, and use the sending function of MUA, it will deliver the mail to the
MTA you appoint to.
When MTA receive the mail from itself, it will hand over to MDA to deliver the mail to the mailbox of
the user’s account: In the received mail, if the destination is Mail Server it means MTA itself.
Meanwhile, MTA will transfer the mail to MDA and put the mail in the recipient’s mailbox.
MTA will transfer the mail again; if the recipient of the mail is not the internal account, then the mail
will be transferred again. This function is called Relay
Remote MTA receive the mail that sent by local MTA: Remote MTA will receive the mail that sent
by local MTA and transfer the mail to its MDA. Meanwhile, the mail will be saved in remote MTA
and applied for the user to download.
And the action of user to receive mail is as follows:
The PC that used by remote user will connect to his/her MTA directly, to ask MTA to check if its mailbox
has mails or not. After MTA check by MDA, it will transfer the mail to the user’s MUA. Meanwhile,
according to MUA setting, MTA will choose to delete the Mailbox or to preserve it. (For the next time
when user receive the mail again, the preserved mail will be downloaded again)
The protocol of send/receive e-mail is as follows:
1. Sending e-mail: It is a function of the process of sending the mail from MUA to MTA, and transfer
mail from MTA to the next MTA. At present, most of the mail server uses SMTP Protocol (Simple
Mail Transfer Protocol), and the Port Number is 25.
162