I get no response when I try to send or receive yahoo.com email from zimbra. when I check the logs I see "auth_expired" and something about credentials expired. I hover over the "yahoo account" in zimbra to check status and get "status" unknown. Other mail programs sync fine with Z, including Gmail, etc. What is going on? I was simly scrolling through mails in zimbra (yahoo account emails) and setting up forwards. I noticed all outbound emails were going into outbox and not being sent. So, I checked the send/receiving interval and noticed I could not change it from 15 to 5. So then I noticed the patch and installed it as per the instructions. I then rebooted my Vista sp 1 pc. Still, all accounts synch fine but cannot sync Yahoo. This is very frustrating.