[exim] Exim Sending Mail Out To Slow

Hi,

I apologize for this newbie message but I need some help with exim and my host doesn't seem to have the answer.

I send a daily newsletter of 29,000 messages. Unfortunately, exim is sending out mail at approximately 1000 messages an hour. This is far to slow for my needs. I'd like to have these messages out within 6 hours if possible.

Currently I have these settings:
queue_run_max = 10
remote_max_parallel = 10
Number of minutes between mail server queue runs = 10

I'm really not sure if this is limitation of exim. How can I increase the rate emails go out at. If anyone could assist I would greatly appreciate it.

Thanks,

slevytam