trouble sending mail to yahoo

[betty]

for the past 4 days, my friends with yahoo accounts haven't received my 
emails. although the don't bounce back. they looked in their 'spam' 
folder and they all got dumped there. even tho i previously was able to 
send to them.

i too tried to send messages from my gmail account, and they went 
through fine.

-- 
betty i.
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