Authenticates a user towards the POP server using some AuthenticationMethod.
| Exception Type | Condition |
|---|---|
| NotSupportedException | If Apop is used, but not supported by the server |
| InvalidLoginException | If the user credentials was not accepted |
| PopServerLockedException | If the server said the the mailbox was locked |
| ArgumentNullException | If username or password is a null reference |
| LoginDelayException | If the server rejects the login because of too recent logins |
Pop3Client Class | OpenPop.Pop3 Namespace | Pop3Client.Authenticate Overload List