Exchange Mail route
I might have asked this question in the past but want more confirmation.
The flow of email in Exchange 2003/2007 & 2010
in Exchange 2003
Internal mail:
Reading email from exchange server: Outlook connects to Exchange server and reads email
when sending from internal to external, it goes straight to internet without going through Front End server
External email : if it's coming through OWA, outlook mobile phone, blackberry ( user has an account in the exchange server), then it should go through Front end server to back end server.
if it s coming from public emails such as Hotmail or Yahoo then it goes straight to exchange server without going through front end server.
BUT , I have seen environments that don't have Front End Exchange server , just the Back End-- so what is the pros and cons of having FE or not having it.
in Exhcange 2007 & Exchange 2010
Internal email : when viewing email , Outlook connects to Exchange Mailbox server role and view the emails without going through Client Access .
when sending internal email to internal email address, outlook sends an email straight to Exchange Mailbox role server without going through Client Access role
when sending internal email to external email, the email goes from the Mailbox to the HUB and to the EDGE then to internet, [without passing through Client Acces]
External email: if it 's sent through OWA, outlook mobile phone, blackberry ( user has an account in the exchange server) the email comes through EDGE to HUB to Client Access server then to Mailbox server.
if it's sent through Yahoo, Hotmail then it comes through EDGE to HUB to Mailbox server without passing through Client Access.
***CLIENT ACCESS ROLE is kind of confusing , any Exchange2007/2010 expert to clear this confusion up?
Thanks
The flow of email in Exchange 2003/2007 & 2010
in Exchange 2003
Internal mail:
Reading email from exchange server: Outlook connects to Exchange server and reads email
when sending from internal to external, it goes straight to internet without going through Front End server
External email : if it's coming through OWA, outlook mobile phone, blackberry ( user has an account in the exchange server), then it should go through Front end server to back end server.
if it s coming from public emails such as Hotmail or Yahoo then it goes straight to exchange server without going through front end server.
BUT , I have seen environments that don't have Front End Exchange server , just the Back End-- so what is the pros and cons of having FE or not having it.
in Exhcange 2007 & Exchange 2010
Internal email : when viewing email , Outlook connects to Exchange Mailbox server role and view the emails without going through Client Access .
when sending internal email to internal email address, outlook sends an email straight to Exchange Mailbox role server without going through Client Access role
when sending internal email to external email, the email goes from the Mailbox to the HUB and to the EDGE then to internet, [without passing through Client Acces]
External email: if it 's sent through OWA, outlook mobile phone, blackberry ( user has an account in the exchange server) the email comes through EDGE to HUB to Client Access server then to Mailbox server.
if it's sent through Yahoo, Hotmail then it comes through EDGE to HUB to Mailbox server without passing through Client Access.
***CLIENT ACCESS ROLE is kind of confusing , any Exchange2007/2010 expert to clear this confusion up?
Thanks
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
I also don't understand why some environments use Load balancing for CAS, if it's only used as an interface to read mail.
SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
Sending and reading should be different.
if sending emails doesn't go through CAS, what about reading ?
which type clients that go through CAS when reading email?
if sending emails doesn't go through CAS, what about reading ?
which type clients that go through CAS when reading email?
SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
<<in exchange 2010 CAS is for ALL clients, all clients will connect to cas to retreive their emails>>
Thanks , I was looking for that.
So all clients when they view their emails they go through EDGE->HUB-->CAS-->Mailbox
and all clients when they send emails they go through EDGE-HUB-->Mailbox
public emails such as Hotmail can send email and it will go through EDGE-->HUB-->Mailbox
Thanks , I was looking for that.
So all clients when they view their emails they go through EDGE->HUB-->CAS-->Mailbox
and all clients when they send emails they go through EDGE-HUB-->Mailbox
public emails such as Hotmail can send email and it will go through EDGE-->HUB-->Mailbox
SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
Thanks, one thing missing,
if you want to view email using OWA, and you are :
1- in public place using OWA
2 -you are inside the LAN but using OWA.
if you want to view email using OWA, and you are :
1- in public place using OWA
2 -you are inside the LAN but using OWA.
SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
Excellent
ASKER
Correct if I am not understanding it
Correct if I am not understanding it
Exchange 2003
I have seen an environment where they have only one Exchange server and they have FE.
it is used for the external emails that come from users that already have mailboxes on the exchange server for instance OWA users, not from hotmail or yahoo emails that are sent straight to the exchange server.
Exchange 2007/2010
If I understand you are saying CAS is used only for internal users to read emails from Mailbox server,
when internal users send emails to other internal users does it go through CAS? I guess you are saying NO. Correct?
When internal users send emails to external users does it go through CAS?I guess you are saying NO. Correct?
When users opens OWA from Home and login successfuly to read their emails, are they going through CAS? and what about when they send email from OWA , is the email going through CAS which I believe it is not.
emails that come from hotmail or yahoo are sent straight to mailbox server via EDGE and Hub , they don't go through CAS. Correct?