Visual FoxPro

Send a Raw SMTP Command

Demonstrates the Chilkat MailMan.SmtpSendRawCommand method, which sends a raw command to the SMTP server and returns the server's response. The second argument specifies the charset to use if the command contains non-US-ASCII characters, and the third indicates whether to base64-encode the command before sending. This example sends a raw NOOP on an open connection.

Background: SMTP is a line-based text protocol (EHLO, MAIL FROM, RCPT TO, DATA, QUIT), so a raw-command hook lets you issue anything Chilkat doesn't wrap — a server extension, or a custom step during a manual auth exchange. The base64 flag exists because some SMTP exchanges (notably AUTH challenge/response) require the argument to be base64-encoded on the wire.

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LOCAL lnSuccess
LOCAL loMailman
LOCAL lcResponse

lnSuccess = 0

*  Demonstrates the MailMan.SmtpSendRawCommand method, which sends a raw command to the SMTP
*  server and returns the server's response.  The 2nd argument is the charset used if the
*  command contains non-US-ASCII characters, and the 3rd indicates whether to base64-encode
*  the command before sending.

loMailman = CreateObject('Chilkat.MailMan')

*  Configure the SMTP server connection.
loMailman.SmtpHost = "smtp.example.com"
loMailman.SmtpPort = 465
loMailman.SmtpSsl = 1
loMailman.SmtpUsername = "user@example.com"
loMailman.SmtpPassword = "myPassword"

lnSuccess = loMailman.OpenSmtpConnection()
IF (lnSuccess = 0) THEN
    ? loMailman.LastErrorText
    RELEASE loMailman
    CANCEL
ENDIF

*  Send the raw SMTP NOOP command (not base64-encoded).
lcResponse = loMailman.SmtpSendRawCommand("NOOP","us-ascii",0)
IF (loMailman.LastMethodSuccess = 0) THEN
    ? loMailman.LastErrorText
    RELEASE loMailman
    CANCEL
ENDIF

? "NOOP response: " + lcResponse

lnSuccess = loMailman.CloseSmtpConnection()
IF (lnSuccess = 0) THEN
    ? loMailman.LastErrorText
    RELEASE loMailman
    CANCEL
ENDIF

RELEASE loMailman