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Hi,
I want to read gmail emails by using imap
I got those code from searching
C#
using (Imap imap = new Imap())
{
    imap.Connect("imap.gmail.com");   // or ConnectSSL 
    imap.UseBestLogin("********@gmail.com", "*******");
    imap.SelectInbox();
    List<long> uids = imap.Search(Flag.Unseen);
    List<MessageInfo> infos = imap.GetMessageInfoByUID(uids);
    foreach (MessageInfo info in infos)
    {
        MessageBox.Show("Subject: " + info.Envelope.Subject);
        MessageBox.Show("From: " + info.Envelope.From);
        MessageBox.Show("To: " + info.Envelope.To);
        foreach (MimeStructure attachment in info.BodyStructure.Attachments)
        {
            MessageBox.Show(attachment.SafeFileName);
        }
        break;
    }
    imap.Close();
}

but I've this exception in imap.Connect("imap.gmail.com");
An attempt was made to access a socket in a way forbidden by its access permissions 74.125.24.108:143

I don't understand I must connect to what?
Posted
Updated 28-Aug-17 4:54am
v2
Comments
Kornfeld Eliyahu Peter 22-Nov-15 4:08am    
Check port 143...It is probably blocked...
Kornfeld Eliyahu Peter 22-Nov-15 4:09am    
You may use netstat (command line) to check if someone holds that port for any purpose...
Heba Kamel 22-Nov-15 4:10am    
I solved it by using
imap.ConnectSSL("imap.gmail.com", 993);
rather than
imap.Connect("imap.gmail.com");
Kornfeld Eliyahu Peter 22-Nov-15 4:35am    
That's because 993 is the port for secure connection (with IMAP) and probably Google uses it and not port 143 (unsecured)...
https://support.google.com/mail/troubleshooter/1668960?hl=en#ts=1665018%2C1665144

1 solution

The message you see mostly means that you have a blocked port in your way to the server...
The port here is 143 (the default port for not-secured IMAP protocol)...
It is also very possible that you need to use port 993 (the port for secured IMAP protocol) as Google request secured connection...
 
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