新世代のMTAへ

以下のテキストは、執筆時当時の情報を元に書いたものであり、 現在の情勢にそぐわないことを含む場合があるので注意されたい。 また、テキストは最終提出原稿で校正を経る前のものなので、実際にUNIXUSER 本誌に記載されたものとは異なる。誤字脱字等そのままである。

致命的な誤り以外は加筆修正等は行なわないので情報の鮮度に気をつけつつ 利用して欲しい。

目次


Part I MTA





MTA Postfix  qmail 



MTA?


MTA(Message
Transport Agent)MTA
sendmail
MTA
	* 
	* 

()

--[]----------------------------------------------------------------------

 +------ LAN 1 ------------------------+
 | +-- client1--+ (smtp) +-mailserver+ |
 | |   [MUA] | MTA       | |
 | +------------+        |     | |  SMTP
 | +-- client2--+ (smtp) | +mailbox+ |---/---/---/-  (The Internet)
 | |   [MUA] | |       | | |
 | +------------+        +-+-------+-+ |
 |                                     |
 +------------------------------------+

  LAN34 (The Internet) 
    
------------------------------------------------------------------------------


UNIX
MUA(Mail User Agent)
MUAMTA

MUAPOP


MTA -- sendmail


ARPAnetdelivermail
Eric Allman SMTPsendmail
sendmail 


sendmail
sendmail
MTA


(~/.fowrad)
sendmail



FTP

WWWWindows95
TCP/IP

sendmail


sendmail?

sendmail


	@

sendmail
UUCPBITNETJUNET
()
sendmail

(sendmail.cf)
sendmail


sendmail




 ** sendmail

sendmail.cf
CF


sendmail




sendmailMTAsendmail




sendmail(
)sendmail



sendmail

sendmail



(Open Relay)


sendmail20
sendmail



sendmail
Part2, Part3
[]

sendmail

--[]----------------------------------------------------------------------
 sendmail.cf
 
 POP
 
 
------------------------------------------------------------------------------

sendmail

MTA
sendmailMTA

sendmail


* 

MTA


MTA


* 

sendmail


MTA
sendmail
MTASMTP


* 

sendmail
UNIX




* 

Part Postfix, qmail 











LAN
PC






* 

UNIX&


qmail1.03 
1998

MTAsendmail







()




MTA

sendmailMTA
sendmail
ZMailer[1], qmail[2], Exim[3], Postfix[4] 
--[14]---------------------------------------------------------------
1. Copyright 1992 by Rayan S. Zachariassen,
   Copyright 1992-1997 by Matti Aarnio
2. qmail 1.03 Copyright 1998 D. J. Bernstein
3. Copyright (c) 1998 Nigel Metheringham
4. Copyright (c) 1997,1998,1999, IBM Corp..(Wietse Venema)
---------------------------------------------------------------------------

 sendmail.cf 
sendmail
qmail
UBE(SPAM)SMTP
sendmail

qmail
Postfix
 "Vmailer" 
sendmail
1997qmail Vmailer()
 Vmailer 


PostfixMaildirqmail
NetBSDsendmail
MTAPostfix(
sendmail)

sendmail



MTAsendmail


qmailPostfixUBE



Postfixqmail

WebqmailPostfix




    * (/var/mail/USER)

      Postfix
      Maildir 
      PostfixMaildir 
      Maildir
      

    * 

      sendmail.cf
      
      qmail
      1,245
      2qmail
      
      
      Postfix
      
      
      
      
      

    * Virtual domain 

      MTA virtual domain 
      (alias)
      
      qmail
       virtual domain 
      qmailqmail
      Postfix
      
      Postfix FAQ
      
      virtual
      domainMTA
      

MTA






MTA


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