Error Codes and Messages for POP3Session

Code	Message
0	Ok
1	Already logged in
2	Not logged in
3	Can't connect to host
6	Invalid sender name
7	Invalid sender address
8	Invalid user name
9	Invalid password
10	Could not send message
11	No messages to receive
12	Could not delete message
13	No main recipient specified
14	Invalid recipient
15	Invalid attachment
16	Could not save attachment
17	Invalid Authentication value
18	Not enough memory
19	Connection lost
20	Timeout exceeded
21	Memory allocation error
23	The server does not recognize any of the supported authentication methods
24	Authentication error
25	User or password refused
26	No current message
27	Invalid NewMessages value
29	POP3 server does not support NewMessages = 1
30	POP3 server does not support GetNextUID
50	Server reply was invalid
51	Server replied with an error