Entourage Error 17099

[albert g]

Hello,

i have searched the web and found no answer to this. hope you can help. i use mac with 10.4.2. i have entourage 2004.

when i send many emails, i get:
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4.7.7 mail access temporarily suspended for 64.163.212.253**bcmi**pimout4

mail could not be sent.

account name: xxx (subaccount)

error: 17099

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i also cannot send to groups that are more than 10 emails.

i have sbc yahoo on a dsl line.

if you have some insight into this it would be very appreciated.

thanks so much,

albert