Mail sent from Outlook 2003 causing duplicates.

  • Thread starter Thread starter Tom O'Sullivan
  • Start date Start date
T

Tom O'Sullivan

Sending a mail from Outlook 2003 to multiple internal addresses causes
everybody in the recipient list to recieve multiple copies (= to the
number of recipients).

We use Mdaemon to retrieve mail from a pop server at our ISP (Verio).
It then dedupes the mails using the MessageID. When Outlook 2000 users
send a mail to multiple recipients all copies of the mail have the
same MessageID. However, mails from the Outlook 2003 users get unique
IDs for each recipient, and so the deduping fails. Anyone know why
they should behave so differently?

Thanks in advance,
Tom.
 
Outlook 2003 does not set the Message-Id of the messages it sends (a number
of people raised privacy issues with it), and instead relies on the server
to produce the Message-Id. I suspect that your server is producing a
separate message (with Message-Id) for each of the recipients, rather than
producing a single message with a single Message-Id and sending it to all
recipients.
 
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