Just this week, Yahoo has stopped accepting the same volume of mail
from some large mailing lists that I host. There's no error
message - our server connects to Yahoo's SMTP server, then the
connection is closed. This doesn't happen every time. I've observed
success/failure between 1/1 and 5/1 since this started.
Is there any Yahoo contact on this list, or can anyone give me a
phone number to contact? I've tried emailing, but have received
no response, and Customer Care simply won't put me through to any
network or mail admin.
I'm trying to work out some kind of whitelisting, or at least to
find out more about how we need to delivery email to them to have
it accepted. Even a 20% failure rate clogs the queue and slows
delivery for the entire mailing.