Yahoo?
 

I've had 3 emails to yahoo addresses, sent from 3 different machines, bounce today due to the same error message "other address failure". All were sent from the same comcast account over the last 48 hrs. They're the only yahoo messages sent, and the only ones out of maybe 50 or so that bounced. Anyone else having an issue with yahoo?

I cc'd two projects i was working on at school today to my yahoo email with success, the first one around 9am the second around 1 pm, PST. Maybe that helps you figure out whats up, maybe it doesn't. Good luck!

I had several bounce back from yahoo to my comcast today too.

Had this problem yesterday. Working OK today though.