JI6 update blocks Yahoo Mail through Wifi

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I had the stock Vibrant and just upgraded to JI6. Before, I had no problems accessing my paid yahoo mail with the following settings:

incoming: plus.pop.mail.yahoo.com / 110
outgoing: plus.smtp.mail.yahoo.com / 587

After the upgrade, I can read my email using GPRS, but if Wifi is turned on I get an error:

Free Yahoo! Mail accounts cannot be connected through Wi-Fi.
Please disable Wi-Fi and try again.

WTF???

I use the Yahoo Mail program and have no problem on Wifi. Not sure why you're having issues. Maybe its the wifi that you're using.

I was having the same problem after flashing back to stock ROM ( and I don't have JI6 installed) it was giving me "503 error" when trying to set up with WiFi, worked fine with 3G though...weird..

Same problem here, just weird!!

same here.. not just yahoo but gmail as well

Same problem with just Yahoo mail after JI6 update.