Mail Routing

HCL Domino Domino Forum
1

Dear All ,

How does mail routing happen in internet world . Say if i send a mail from Yahoo mail account to another account on Hotmail. Does it happen in the same way as it happen in domino domain … Please guide as it will help me to make concept clear for mail routing

Thanks in advance

Vikalp kumar

2

Subject: Mail Routing

There is allot of information out there that is searchable by many wonderous engines. Here are some of the links I have found with the string

“SMTP routing Basics” - google.com

http://www.windowsitlibrary.com/Content/212/01/1.html

http://people.csa.iisc.ernet.in/gaurav/np/rfcs/smtp.html

http://www-12.lotus.com/ldd/doc/domino_notes/Rnext/help6_admin.nsf/89d3962efd85426f85256b870069c0aa/f0e11c47fc62bc2e85256c1d00394ef9?OpenDocument

The wonders of the internet

3

Subject: Mail Routing

It is easier to think of the mail traffic as a conversation between to people.

Mail server 1 = (Bob) and is Yahoo

Mail Server 2 = (dave) and is Hotmail

Conversation is like this.

Bob says: Hello my name is BOB

Dave says: Hello Bob I am Dave

Bob say: Here is a document (letting dave know how he is going to send it)

Bob passed Dave the Document.

Dave says: Thank you I have received the document

This is very simple but all SMTP transfers happen in the same way. Whether the message is tunnels or not. This is the standard for all SMTP traffic and all servers and application have to abide by it.

4

Subject: RE: Mail Routing

Dear Nathan ,

Thanks for the response , that right it happen in the same way as told in your example … can you please give me through detail …

Suppose i am sending mail from Yahoo account and press send button where this mail will hit first ? … and then atlast to recipent which on Hotmail account …

Thanks in advance

Vikalp Kumar

5

Subject: RE: Mail Routing

OK here goes

  1. You hit send

Your Client (web / Notes / Outlook) will send the information that you have types or attached and send it to the mail server

  1. The server will convert the information into MIME format (for transfer)

  2. The Server will look up the MX record for the Domino @etc.com. This will point the SMTP server to the correct IP address of the recipient server.

  3. The server will send the “Helo” to the other server and start the transfer

  4. A 200 response is sent to the sending server that all has been received. The sending mail server ends connection.

6: The recipient mail server finds the name of person / group etc. Then delivers the email if it can.

  1. the client can then refresh the inbox to view the email.
6

Subject: RE: Mail Routing

Dear Nathan ,

Thanks for description i was actually looking for this kind of description only . can you please provide me some link or documentation which help me to know more about MMX records , SMTP concept, MIME etc like how they work and their uses in internet mail routing …

Thanks in advance

Vikalp Kumar