Friends will come back in this search and we're going to learn how to install and configure our own
e-mail server.
OK.
But before actually installing and configuring it to understand how an e-mail server works.
OK.
Mentha in our daily lives we send an e-mail to applications like G-mail Hotmail or bear with applications
like Outlook talking but we don't know what exactly the procedure is going on.
OK.
At the background.
So in this lesson I want to show you the working of an image.
So OK so let's understand this the basic demonstration here.
Suppose there is a client whose e-mail address is Bob.
OK Bob directly mail dot God.
And every user application that we are using for sending and receiving e-mail is called as user agent.
OK.
Whether it is Hotmail or Zeeman such applications are called as User-Agent applications.
And suppose this board wanted to send an email Bombardier D.M. got caught.
So what happens is every moment that is edited gmail dot com.
OK at gmail dot com is a domain so every domain contains and they seem to be OK every moment contains
content this seem to be said were quoted as Mail Transfer Agent.
OK so then the client machine sense.
OK the message comaraderie Jimmer dot com.
Then do a search for the domain here.
So because you belong to the local domain name that is the same type you said was domain name so it
searches for that account.
OK in the local database.
OK and deliver the message to that account.
If Dacca can present it in this way the local mail delivery box local means that email is belonging
to the same domain which decline belongs.
OK and what if the client wanted to send an email to enjoy at hotmail dot com or dot com is another
domain.
So in this case probably DNS was gonna help us.
OK so how are they going to help us.
Because every S-M keep the word is registered to this public DNS so it's OK.
We're going to learn about Hoque install and configure our own DNS servers in the upcoming license.
But for now just understand it recently.
So what is registered there.
OK so the user sends the email to hotmail dot com then the keep sort of mail ticks for the domain.
First it takes for the moment and because the domain is not belonging to G-mail dot com it sends the
request to the public DNS so it's OK.
And then since the public DNS servers and the public DNS servers searches for the IP address of a direct
HOTMAN got caught OK and even the phone the IP address of hotmail dot com this thing that information
back could simply be sort of were of.
OK and as it gets the IP information it establishes the connection would simply be server off hotmail
dot com Enderley was the message.
In this way whenever you want to send an email to other domain which is not belonging to the local domain
then the procedure works in this way.
In this way the SO us who works whenever we want to send or receive any e-mails in our next lesson we're
going to learn how to install and configure our own email server.
Ok and we go in and rescue delete emails.
OK with the help of command line.