MXH
Guest
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 Posted:
Thu Nov 17, 2005 5:58 pm Post subject:
Duplicates |
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Hopefully someone here can explain this one because it's confusing me.
If I (mike@xyz.com) send an e-mail to bill@domain1.com and ben@domain1.com,
I find that if Exchange collects the domain1.com e-mail from a global POP3
mailbox, then Bill and Ben will both receive 2 copies of the mail. Some POP3
hosts offer a 'dedupe' facility which will prevent this, but many don't.
However, if mail for domain1.com is sent direct to Exchange by SMTP, Bill
will receive just one copy of the mail, and so will Ben
Why is this so? Surely when I send the mail, there are 2 copies 'out there'.
Why is it that Exchange can identify that the 2 mails are the same when they
come via SMTP (and deliver just one copy to each user), but not when they
come through the SBS2003 POP3 connector.
Thanks for any help
Mike
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Andy David - MVP
Guest
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| Posted:
Sat Nov 19, 2005 1:58 am Post subject:
Re: Duplicates |
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On Thu, 17 Nov 2005 07:39:11 -0800, MXH
<mike.hall@discussions.microsoft.com> wrote:
| Quote: | Hopefully someone here can explain this one because it's confusing me.
If I (mike@xyz.com) send an e-mail to bill@domain1.com and ben@domain1.com,
I find that if Exchange collects the domain1.com e-mail from a global POP3
mailbox, then Bill and Ben will both receive 2 copies of the mail. Some POP3
hosts offer a 'dedupe' facility which will prevent this, but many don't.
However, if mail for domain1.com is sent direct to Exchange by SMTP, Bill
will receive just one copy of the mail, and so will Ben
Why is this so? Surely when I send the mail, there are 2 copies 'out there'.
Why is it that Exchange can identify that the 2 mails are the same when they
come via SMTP (and deliver just one copy to each user), but not when they
come through the SBS2003 POP3 connector.
Thanks for any help
Mike
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You might be better served to ask this in a SBS newsgroup. |
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