Event ID - 13003

Event Id13003
SourceMSExchange POP3 Interface
DescriptionLogon attempt from N.N.N.N to corpdomain/derek has failed: HrLookupCredentials() call failed with error Logon failure: unknown user name or bad password
Event InformationAccording to Microsoft:
A custom recipient object on a Microsoft Exchange Server computer does not have a physical mailbox associated with it. Therefore, it is not possible for a POP3 or IMAP client to access a custom recipient object on a Microsoft Exchange Server computer. This behavior is by design.
Follow these steps:
1. In Exchange Administrator, make sure the Exchange service account has permissions at the site, configuration, and server levels.
2. In Control Panel, double-click Services and make sure all Exchange services start by using this account:
a. Select an Exchange service, and then click Startup.
b. Make sure that Log On As is selected, and that the Exchange service account is listed.
3. In User Manager for Domains, make sure that this account has the following user rights:
Act as part of the operating system
Log on as a service
Log on locally
Restore files and directories
4. Stop the information store, and then restart it.
5. To test the new configuration, use telnet to connect to port 110.
Reference LinksOutlook Express and Outlook repeatedly prompt you for your password

XFOR: Testing POP3 Through Telnet Does Not Work, Generates Event 13003

XCON: POP3 and IMAP4 Clients Cannot Log On to Exchange Server, and Event ID 13003 Occurs

XADM: Custom Recipients Cannot Be Accessed via IMAP or POP3 Client

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