Solved

Help using Sockets

Posted on 1998-09-11
2
554 Views
Last Modified: 2010-05-18
I am trying to make a program for the ISP I work for that connects to the SMTP Server and verifies that a particular account exists using the 'VRFY mailbox' command.
I have practically no resources on Delphi, so I am mostly learning by trial and error and the HELP file included (no examples).

Here's what I have so far:
    UserAddr := User + '@myispdomain.net';
    SMTPComm := 'VRFY ' + UserAddr + Chr( 13 ) + Chr( 10 );
    WITH ClientSocket1 DO BEGIN
             Host := 'smtp.myispdomain.net';
      Port := 25;
      Open;
    END;

    Incoming := ClientSocket1.Socket.ReceiveText;
    WITH ClientSocket1 DO BEGIN
         Incoming := Copy( Incoming, 1, 3 );
           Val( Incoming, ErrCode, Code );
         IF ErrCode = 220 THEN BEGIN
            Socket.SendText( SMTPComm );
            Incoming := Socket.ReceiveText;
          Incoming := Copy( Incoming, 1, 3 );
              Val( Incoming, ErrCode, Code );
         END {IF};
         Close {Socket};
     END {WITH};

The Main problem I am having is that if I "trace" the program while debuggin, it works GREAT! but when I run the program through, it does NOT wait for a reply from the Server after connecting or sending the VRFY command, even when i created the socket with a ClientType := ctBlocking.

How can I make it WAIT for an event before continuing with the program?
Can anyone give me an example of Socket code of this nature with a basic event/error trap?


0
Comment
Question by:DropZone
2 Comments
 
LVL 18

Author Comment

by:DropZone
ID: 1339427
NOTE: I am trying NOT to use the SMTP ActiveX component included in Delphi3 because I want to compile the program into a single EXE file for simplicity.
0
 
LVL 8

Accepted Solution

by:
ZifNab earned 100 total points
ID: 1339428
Hi DropZone,

Only one place when you need to work with TSocket, TSmtp, etc...

Go to freeware components of

http://www.rtfm.be/fpiette/indexuk.htm

Send him just a postcard and add yourself to the free (great by the way!) Help mailing list!

Look at his demo-examples too! Everything WITH SOURCES

Regards, Zif.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
In this tutorial I will show you how to use the Windows Speech API in Delphi. I will only cover basic functions such as text to speech and controlling the speed of the speech. SAPI Installation First you need to install the SAPI type library, th…
This Micro Tutorial will teach you how to censor certain areas of your screen. The example in this video will show a little boy's face being blurred. This will be demonstrated using Adobe Premiere Pro CS6.
Edureka is one of the fastest growing and most effective online learning sites.  We are here to help you succeed.

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now