yahoo hates tor-announce mails: "User is receiving mail too quickly"
When we send mail to tor-announce@, we get hundreds of bounces, one from each person at yahoo.com give or take.
More investigation shows that yahoo is giving us a "450 User is receiving mail too quickly tnmpmscs (in reply to RCPT TO command)" response for each permanent failure.
I wonder if there's a line we can add in our postfix to slow down (spread out) delivery to this domain.
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