In Outlook 2007 first message from BCC line went to email group second message recieved Your message did not reach some or all of the intended recipients.

In Outlook 2007 we send a mass email to our members using the BCC line and adding the group. We leave the To: line and the CC: line blank insert our message and the first one goes out fine with no kick backs. The problem is if we send 2 or more out a day we get a system email back stating Your message did not reach some or all of the intended recipients. So it works for one per day. Please help

Your message did not reach some or all of the intended recipients.
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Is this issue limited to only OL2k7 or OL2k3 or OWA ??
Also, is this issue limited to only one particular group or all ??
Can we perform a message tracking and check which member from the groups is faulty.
You may want to select the option "Delivery reports"

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