How to get information about Smtp server

[sulabh120881]

Hi To ALL

i want to write a program with mfc that will check a smtp server is working or not. (same for FTP)
eg if my amtp server is "smtp.gmail.com" and port is 25 then how would i know that server is running.
can i use atl server library function in my mfc based application.

Thanks in Advance

[Marc G]

[ moved thread ]

To start you could open a network connection (socket) to the server on the specific port and see if you get a connection.

[sulabh120881]

Hi to All,

how can i send mail from my smtp server to any mail address.
i m trying this with socket but after connecting server with my socket i get an error 553
how can i validate data on server(user name and passward) and get its response.

Expecting a favorable reply
Thanks in Advance

[j0nas]

Are you sure this is a socket error??? Looks more likely to be an SMTP error. Send some code and describe exactly when this happens.

The "normal" way of sending mail SMTP->SMTP, is to first find the correct SMTP server IP. For instance, if a mail should be delivered to Joe@example.com... your SMTP server must first find the MX record of the domain "example.com". The MX (mail exchange) record is a DNS record which will give you the host name to the service that handles mail exchange for the specified domain (in this case "example.com"). If it is a valid mail address that you will send to, a MX record is returned (=hostname of the SMTP server). Now, call gethostbyname(<MX of example.com>) to get the IP and then connect as usual, and then start talk SMTP etc etc.

Use the DNS API in Windows 2000/XP to lookup MX records, or implement your own resolver (see RFC for DNS).

Hope it helps.

[sulabh120881]

I cant use DNS API because i m working on vc6.0 and this api is not available here.
There r some problem
1: if i send a mail with my smtp and it routs this to another server then how can i get this server name.
2: if my server take authentication then how can i validate user name and passward

[j0nas]

It doesn't matter if you are compiling with VC6, VC7 etc... the DNS API is platform dependant. Download the Platform SDK if needed.

Read the SMTP RFC (http://www.faqs.org/rfcs/rfc821.html) for details on the SMTP the protocol (including auth).

[sagar1596]

Hi All,

I am using a Win 2k8 box and trying to find the Default SMTP address of the machine.

I cant find anything in the registry that can give me the SMTP Address.

I tried searching in the registry entry : \Software\Microsoft\Internet Account Manager
but no luck.

I can't use third party assemblies. Need standard C++ code.

Any help will be appreciated.

Thanks
Sagar

[MrViggy]

You should start a new thread, instead of waking one that is 4 years old. However, why do you think the default SMTP server is stored in the registry? There's no place in a standard Windows install to enter this data.

In other words, you can't find it because it isn't there.

Viggy