imap,没有密码如何通过用户帐号获取用户的邮件？

[dbserver]

因为只有用户帐号，没有密码，所以不能通过Login的方式来获取用户邮件信息。
通过Login的方式，大致方法如下：
Chilkat.Imap imap = new Chilkat.Imap();
bool success;
// Anything unlocks the component and begins a fully-functional 30-day trial.
success = imap.UnlockComponent("Licensing");
if (success != true)
return "Error";
// Connect to an IMAP server.
success = imap.Connect("xxxxxserver");//125.91.253.46
imap.Port = 143;
if (success != true)
return "Error";
// Login
success = imap.Login(usernumber, passwd);//用户名与密码登陆
if (success != true)
return "Error";

// Select an IMAP mailbox
success = imap.SelectMailbox("INBOX");
if (success != true)
return "Error";
Chilkat.MessageSet messageSet;
// We can choose to fetch UIDs or sequence numbers.
bool fetchUids = true;
// Get the message IDs of all the emails in the mailbox
messageSet = imap.Search("UNSEEN", fetchUids);//ALL,NEW,SEEN,UNSEEN
if (messageSet == null)
return "Error";
// Fetch the emails into a bundle object:
Chilkat.EmailBundle bundle;
bundle = imap.FetchHeaders(messageSet);//FetchBundle
if (bundle == null)
return "Error";
// Loop over the bundle and display the FROM and SUBJECT of each.
// Disconnect from the IMAP server.
imap.Disconnect();

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以上方法是可以通过的。但现在没有密码，请问如何通过imap获取用户邮件？

[cppfaq]

没玩过
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