Well, I got a response from yahoo. I followed the steps and unfortunately, my yahoo mail still does not work on my iPhone
"Thank you for writing to Yahoo! Mobile Tech Support.
I understand that you are having an issue downloading emails on your
iPhone. I apologize for the inconvenience this may have caused you, and
I am glad to assist you with your concern.
I've performed some maintenance on the server side of your account which
should resolve the problem. In order to make sure these changes take
effect, please remove your Yahoo! account from your phone, turn the
phone off and back on, and then re-add your Yahoo! account.
To set up your Yahoo! Mail on your iPhone, you will need to utilize the
Yahoo! Mail option provided on your iPhone. To do this, please take the
following steps:
1. Select the "Settings" widget.
2. Select the "Mail" option.
3. Select the "Add Account" option.
4. Select the "Yahoo! Mail" option.
5. Enter your name or the account name under "Name."
6. Enter your Yahoo! email address under "Address." Please make sure to
include your domain name (example,
1234@yahoo.com).
7. Enter your password.
8. Enter a description of the account you are setting up.
Your Yahoo! Mail should connect and set up correctly. If you find that
you are encountering an issue adding your Yahoo! Mail account, please
let us know the following information so that we can assist you:
- The exact error message you are receiving on your iPhone when you
attempt to access your mail
- What security update are you currently using on your iPhone (current
is 3.1.3)
I hope this helps. Please let me know if you continue to have problems,
and I'll be happy to assist you.
If you have other questions or concerns regarding the Yahoo! Mobile
service, kindly let us know. We will be more than happy to assist you
again.
Thank you again for contacting Yahoo! Mobile Tech support."