Hi I am running Exchange 2007 and I use my ISP as a smart host. My ISP has a limit on the number of recipients per single email message(30). I have just created a mailing list with over 200 recipients and would like to be able to send my email to all of them at once. Is there a way that I can tell exchange to send to 30 recipients at a time. In the older exchanges that wasnt a problem cause you would configure that on the smtp service. Help.

The problem here is the ISP. Even if exchange can send 200 emails, your ISP will reject that. Not sure of a way if exchange can send emails in batches from a given DL. Probably some third party.Raj

I dont know if you remember when you used to able to manage smtp service via IIS. Something like maximum number of messages per connection - I seem to recall such a setting. Maybe a registry setting for Exchange 2007? from an ISP point of view, they are trying to guard against spammers - in a way.

http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/657bb5ee-e48b-4a6d-9e2f-ac49b959a1bc.mspx?mfr=true

If the ISP is looking at the number of recipients in the email, I don't think limiting the number of emails sent per connection in the SMTP connector will fix that. It's not a case of being throttled for sending too many emails at once, but of that particular email being rejected as potential spam because it has too many recipients. Use a script or mail merge to send individual emails to each recipient, based on the DL membership.

Maybe I should have rephrased it to number of messages in a single connection. Is there a way of throttling that in exchange 2007? If there isnt no sweat. I will consider myself answered by mjolinor