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Exchange architecture RRS feed

  • Question

  • Can anyone give me an absolute idiots summary of what each of the various elements in an exchange setup actually do, perhaps in the anology of sending/receiving mail? And also - will each element be on a different host/server, and will each element be present in every exchange setup, or not always?

    • CAS services - what do they do/in the context of sending or receiving mail
    • Edge services - what do they do/in the context of sending or receiving mail
    • Hub services - what do they do/in the context of sending or receiving mail
    • Mailbox services - what do they do/in the context of sending or receiving mail
    • UM services - what do they do/in the context of sending or receiving mail

    **Please keep answers management/low tech freindly and as little exchange jargon as possible***

    Also on which of these elements do your mail filters reside, i.e. websense email security, that which protects spam/malware/inappropriate coming in/going out?

    Wednesday, August 8, 2012 10:52 AM

Answers

  • On Wed, 8 Aug 2012 10:52:21 +0000, cf090 wrote:
     
    >Can anyone give me an absolute idiots summary of what each of the various elements in an exchange setup actually do, perhaps in the anology of sending/receiving mail? And also - will each element be on a different host/server, and will each element be present in every exchange setup, or not always?
     
    >CAS services - what do they do/in the context of sending or receiving mail
     
    Exchange 2007 -- OWA, Outlook Anywhere, and ActiveSync use the CAS
    role as their connection point.
     
    Exchange 2010 -- the same as above PLUS all Outlook clients connect to
    the CAS role.
     
    >Edge services - what do they do/in the context of sending or receiving mail
     
    They are the perimeter inflow and outflow servers for SMTP. Mail
    to/from the Internet is handled byt thes servers. They act as
    "hygeine" agents ceaning the e-mail stream of spam and (if so
    equipped) viruses and malware.
     
    >Hub services - what do they do/in the context of sending or receiving mail
     
    These are responsible for deciding how mail is delivered (i.e.
    routing), applying transport rules, expanding distribution groups,
    etc. The mailbox server roles send and receive e-mail to/from the HT
    role.
     
    >Mailbox services - what do they do/in the context of sending or receiving mail
     
    They deliver/receive mail to/from the HT roles and the e-mail clients.
     
    >UM services - what do they do/in the context of sending or receiving mail
     
    These aren't usually associated with "mail". They deal with other
    media streams like voice mail.
     
    >**Please keep answers management/low tech freindly and as little exchange jargon as possible***
    >
    >Also on which of these elements do your mail filters reside, i.e. websense email security, that which protects spam/malware/inappropriate coming in/going out?
     
    Edge, Hub Transport and, optionally, the mailbox role.
     
    ---
    Rich Matheisen
    MCSE+I, Exchange MVP
     

    --- Rich Matheisen MCSE+I, Exchange MVP
    • Marked as answer by cf090 Monday, August 13, 2012 2:09 PM
    Thursday, August 9, 2012 1:02 AM