A week or so ago I started getting the following error with emails going to yahoo stuck in my exim mail queue:
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421 4.7.1 [TS03] All messages from 69.10.56.102 will be permanently deferred; Retrying will NOT succeed
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So yahoo is blocking all emails coming from my IP. I run a shared cpanel server where everyone shares the same IP.

I have filled out their bulk email form once and i dont know if it worked but the emails were out of the mail queue one day os either they got sent or were emptied.

I have just forced enabled DKIM on all accounts to try to make yahoo happy.

What do I do to get them to unblock me?

Thanks!