Application Details of Requested mail action not taken: mailbox unavailable (E.g., mailbox busy), Requested action aborted: local error in processing, Requested action not taken: insufficient system storage, Syntax error, command unrecognized (This may include errors such as command line too long), Syntax error in parameters or arguments, Command not implemented, Bad sequence of commands, Command parameter not implemented, Requested action not taken: mailbox unavailable (E.g., mailbox not found, no access)

Error Id:	450
Error Code:	Requested mail action not taken: mailbox unavailable (E.g., mailbox busy)

Error Id:	451
Error Code:	Requested action aborted: local error in processing

Error Id:	452
Error Code:	Requested action not taken: insufficient system storage

Error Id:	500
Error Code:	Syntax error, command unrecognized (This may include errors such as command line too long)

Error Id:	501
Error Code:	Syntax error in parameters or arguments

Error Id:	502
Error Code:	Command not implemented

Error Id:	503
Error Code:	Bad sequence of commands

Error Id:	504
Error Code:	Command parameter not implemented

Error Id:	550
Error Code:	Requested action not taken: mailbox unavailable (E.g., mailbox not found, no access)

Error Id:	551
Error Code:	User not local; please try