mozilla thunderbird intermittently cannot send emails via Yahoo
I have this really annoying intermittent problem with my Yahoo mail account. I use Mozilla Thunderbird and every couple of months I can't send emails through my Yahoo Pro Mail connected with this account. I have struggled to find the reason and failed and then before you know it the problem has gone again. It is as if Yahoo stops the POP access for short periods which is really annoying when you want to send an email urgently.
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Daniel Blackburn commented
This is what comes up on thunderbird: "Login to server smtp.mail.yahoo.com failed." "Retry" Enter New Password" "Cancel"