是edb还是stm?关于邮件存放位置的困惑

nake

对于一封邮件进入数据库后的存放位置很困惑 ，我的理解入下表，打问号的地方是我困惑的 ，请各位指教！！
A,B,D,H 为同一个域中的用户，A,B采用EXCHANGE的连接方式，D,H采用远程连接方式，E 为外部邮箱，例如SINA

outlook(A,B),POP3(D,H),Internet(E),Domain(A,B,D,H)
A->B(2M)	A send	MAPI	4M saved in EDB
	B receive	MAPI	2M download from EDB
A->D(2M)	A send	MAPI	4M saved in EDB
	D receive	POP3	2M download EDB,Conversion(mapi to stm)
A->E(2M)	A send	MAPI	2M download from EDB
D->A(2M)	D send	SMTP	2M saved in STM?
	A receive	MAPI
D->E(2M)	D send	SMTP	2M saved in STM?
D->H(2M)	D send	SMTP	4M saved in STM
	H receive	POP3	2M download from STM,NO Conversion
E->A(2M)	E send	SMTP	2M saved in STM
	A receive	MAPI	2M download from STM,Conversion(stm to mapi)
E->D(2M)	E send	SMTP	2M saved in STM
	D receive	POP3	2M download from STM,NO Conversion

钉子

SMTP/POP3是同时来分析的，不需要分开来讲。
关于这个问题我建议你看一下喻勇大牛的文章：
[转帖]浅谈Exchange Server邮件存储系统-原理篇

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