Try checking the account info from the ME side and compare with the XP
account info.
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To change settings on an existing e-mail or newsgroup account
1. On the Tools menu, click Accounts.
2. On either the Mail or News tab, click an account, and then click Properties.
3. Change the information as needed on the appropriate tabs.
To import e-mail account settings
1. On the File menu, point to Import, and then click Mail Account Settings.
2. Select the e-mail client you want to import and click Next.
3. The settings for the e-mail account will appear. To accept these settings, select Accept
Settings, and then click Next. Go to step 5.
4. To change any of the settings, select Change Settings, and then click Next. Use the Internet
Connection Wizard to step through the settings for the e-mail account. Make any changes you want
and click Next.
5. On the Completion page, click Finish.
6. To see the account information, on the Tools menu, click Accounts.