managing number of sent emails per hour

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alomari
Posts: 8
Joined: Tue May 04, 2010 8:22 am

managing number of sent emails per hour

Post by alomari »

Hi,
I am sending mail-shots to a large number of users (sometimes 250K emails). and thus sometime i got blocked from other mail servers because of large amount of sent emails from my domain. how can i manage how many emails sent per hour to a specific domain or to all domains in general?
for example specifying that i want to send 500 emails/hour to @yahoo.com
or 3000 emails per hour to all domains? is that doable? if so please help me in how to manage that.

Thanks for your help