Event ID - 1023

Event Id1023
SourcePOP3SVC
DescriptionError 0x7d6 occurred while rendering message 0001-000000035745 for download for user XXX@XXXX.com.
Event InformationAccording to Microsoft:
CAUSE:
This error can be caused if Outlook clients that are connecting to the Exchange 2000 server are configured with both the Internet E-mail and Microsoft Exchange Server services in the same client profile.
With this configuration, the client downloads mail using a POP3 session. During the POP3 session, if an attempt is made to download a message that has previously been deleted from the mailbox, the Event ID 1023 is generated in the Application event log.
RESOLUTION:
To resolve this issue:
1. Start Outlook.
2. On the Tools menu, click Services.
3. Click Internet E-mail, and then click Remove.
4. Save the changes.

This information from newsgroups may help:
------------------------------------------------------------------------------
(performed on client side):
1. Start Outlook
2. Tools: Services
3. Click Internet Email and Remove
4. Save changes
------------------------------------------------------------------------------
Reference LinksError When You Open a Message with a POP3 E-Mail Client

POP3SRV Event ID 1023 with Multiple Services in Profile

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