E501 Syntax error in parameters or arguments
E502 Command not implemented
E503 Bad sequence of commands
E504 Command parameter not implemented
E550 Requested action not taken: mailbox unavailable.
Example: mailbox not found, no access
E551 User not local; please try
E552 Requested mail action aborted: exceeded storage allocation
E553 Requested action not taken: mailbox name not allowed Example: Mailbox syntax incorrect
E554 Transaction failed
POP3 Communication Errors
There are no standard error code definitions for the POP3 protocol.
Here is the format for POP3 Communication Errors.
F123
F = POP3 Communication Errors
123 =
RFC is an Internet “standards” term meaning “Request For Comment”. RFCs are documents that define standards or proposed
Codes
F001 Text print
When F001 occurs, the Number of Pages column in the Activity Report is blank.
F002 Text received but not printed
When F002 occurs, the Number of Pages column in the Activity Report is blank.
F010 POP protocol USER command error
F020 POP protocol PASS command error
F030 POP protocol RETR command error
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