“When you use the default Exchange Server POP3 or IMAP4 authentication setting (Clear Text Authentication), set your POP3 or IMAP4 account name to include the following information: NTDomain\\NTDomainID\\ExchangeMailAlias For example, if your domain is ”Name_of_domain,“ your account name is ”Myaccount,“ and your Exchange Server alias is ”Serveralias,“ your account name is: name_of_domain\\myaccount\\serveralias To find your account name in Outlook Express: On the Tools menu, click Accounts....