Outlook email doesn't always send

[Dave F.]

I'm having a problem with sending email from Outlook 2007. This is a new
computer downgraded to Win XP Pro from Vista Business by HP. I have updated
XP and Office to the latest servicepacks and updates. BCM for Outlook 2007
is also installed.

Sometimes I can't send messages to multiple contacts. I can send to each
individual contact but having them all in the address line seems to be a
problem. When I click the send button nothing happens. We are only talking
about 2 to 10 addresses. If I start removing addresses I can usually send
the message when I get down to 1 or 2 addresses. Other times it will send
them all without a problem.

These aren't the same addresses either. It can be just about any address(s).

I'm not using any custom forms and we aren't using Exchange at this point.
It's just a pop3 account with an ISP. I can't find anything in any event
logs.

Has anyone else seen this problem before?

Thanks,
Dave F.

 

[Dave F.]

I was wrong about no error message in the event logs. The error is Event ID
25 and the text is

Could not complete the operation. One or more parameter values are not
valid.