Specify Account Information on the Client

Once you create a place to store user messages, you need to direct the client to the appropriate server and configure the account information so the user can log on. Because POP3 clients vary, the process differs for each client. However, all clients must specify the same type of information.

• A POP3 account name. This is the user's alias. You can find this name by viewing the user's account properties in Active Directory Users and Computers; for example, SuzanFines.

• Note   If you have multiple users in one Active Directory domain that share a common user name, a user can only be authenticated if they log on with a unique user name. POP3 can authenticate users if they include their domain name in the format of domain\username or use a User Principal Name (UPN). To use a UPN, the user can log on and append their e-mail address to their user name. For example, if you have two users named Sandra Martinez, and one user works at Financial Bank Inc. and the other works at Airlines International, you can assign names based on their e-mail addresses. The user named Sandra Martinez who works at Financial Bank Inc. would log on as SandraM@financial-bank.bank. The user named Sandra Martinez who works at Airlines International would log on as SandraM@airlines-international.air.

• A POP3 e-mail address. This is the user's Internet address and includes the alias followed by the domain name; for example, SuzanFines@nwtraders.microsoft.com.
• A POP3 server name. Use the name of the Exchange server hosting the POP3 virtual server or the DNS entry of your front-end POP3 server.
• An SMTP server name. Every Exchange server contains a default SMTP server. Use the name of the computer hosting the POP3 virtual server or any other server running the SMTP service.
• By default, Exchange attempts to access the mailbox associated with the Windows 2000 user account name that the user is logged on as. For example, if you log on as Domain\SuzanFines, Exchange attempts to access the mailbox called SuzanFines.
• If a Windows 2000 domain and user name are specified as the POP3 account name, they must precede the mailbox's alias name. For example, domain_name\user_account_name\mailbox_alias_name.
• If a Windows 2000 domain and user account are specified as the POP3 account name, the POP3 server uses a mailbox alias that is equivalent to the Windows 2000 user account; for example, specifying domain_name\SuzanFines as the POP3 account name is equivalent to specifying domain_name\SuzanFines\SuzanFines as the POP3 account name.
• If only an alias name is specified as the POP3 account name, the Exchange server uses a Windows 2000 user name that is equivalent to the alias name. All domains are searched for the first domain that contains that Windows 2000 user. For example, if you specify SuzanFines as the POP3 account name, all domains are searched for the first domain that contains user Windows_2000_domain\SuzanFines\SuzanFines.