Using SmtpSendRawCommand to Change Password

Demonstrates how to use the SmtpSendRawCommand method to change the SMTP user account's password for an SMTP server that supports the non-standard CPWD command.

Note: The SmtpSendRawCommand method is not yet released. To get a pre-release, send email to support@chilkatsoft.com.

Download Chilkat Email ActiveX

CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    --  The mailman object is used for sending and receiving email.
    DECLARE @mailman int
    EXEC @hr = sp_OACreate 'Chilkat.MailMan2', @mailman OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    --  Any string argument automatically begins the 30-day trial.
    DECLARE @success int

    EXEC sp_OAMethod @mailman, 'UnlockComponent', @success OUT, '30-day trial'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @mailman, 'LastErrorText', @sTmp0 OUT

        PRINT @sTmp0
        RETURN
      END

    --  Set the SMTP server.
    EXEC sp_OASetProperty @mailman, 'SmtpHost', 'smtp.chilkatsoft.com'

    --  Set the SMTP login/password (if required)
    EXEC sp_OASetProperty @mailman, 'SmtpUsername', 'myUsername'
    EXEC sp_OASetProperty @mailman, 'SmtpPassword', 'myPassword'

    --  Connect and authenticate:
    EXEC sp_OAMethod @mailman, 'OpenSmtpConnection', @success OUT
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @mailman, 'LastErrorText', @sTmp0 OUT

        PRINT @sTmp0
        RETURN
      END

    DECLARE @strCharset nvarchar(4000)

    SELECT @strCharset = 'ansi'

    DECLARE @bEncodeBase64 int

    --  Send the CPWD command and get the response.
    --  Do not include a trailing CRLF (carriage-return line-feed) in the command string.

    DECLARE @strResponse nvarchar(4000)

    SELECT @bEncodeBase64 = 0
    EXEC sp_OAMethod @mailman, 'SmtpSendRawCommand', @strResponse OUT, 'CPWD', @strCharset, @bEncodeBase64
    IF @strResponse Is NULL 
      BEGIN
        EXEC sp_OAGetProperty @mailman, 'LastErrorText', @sTmp0 OUT

        PRINT @sTmp0
        RETURN
      END

    --  Expecting a 334 response...
    EXEC sp_OAGetProperty @mailman, 'LastSmtpStatus', @sTmp0 OUT
    IF @sTmp0 <> 334
      BEGIN

        PRINT @strResponse
        RETURN
      END

    --  Now send the existing login/password, base64-encoded:
    SELECT @bEncodeBase64 = 1

    --  Send the existing login:
    EXEC sp_OAMethod @mailman, 'SmtpSendRawCommand', @strResponse OUT, 'mySmtpLogin', @strCharset, @bEncodeBase64
    IF @strResponse Is NULL 
      BEGIN
        EXEC sp_OAGetProperty @mailman, 'LastErrorText', @sTmp0 OUT

        PRINT @sTmp0
        RETURN
      END

    --  Expecting a 334 response...
    EXEC sp_OAGetProperty @mailman, 'LastSmtpStatus', @sTmp0 OUT
    IF @sTmp0 <> 334
      BEGIN

        PRINT @strResponse
        RETURN
      END

    --  Send the existing password:
    EXEC sp_OAMethod @mailman, 'SmtpSendRawCommand', @strResponse OUT, 'mySmtpPassword', @strCharset, @bEncodeBase64
    IF @strResponse Is NULL 
      BEGIN
        EXEC sp_OAGetProperty @mailman, 'LastErrorText', @sTmp0 OUT

        PRINT @sTmp0
        RETURN
      END

    --  Expecting a 334 response...
    EXEC sp_OAGetProperty @mailman, 'LastSmtpStatus', @sTmp0 OUT
    IF @sTmp0 <> 334
      BEGIN

        PRINT @strResponse
        RETURN
      END

    --  Send the new password:
    EXEC sp_OAMethod @mailman, 'SmtpSendRawCommand', @strResponse OUT, 'myNewSmtpPassword', @strCharset, @bEncodeBase64
    IF @strResponse Is NULL 
      BEGIN
        EXEC sp_OAGetProperty @mailman, 'LastErrorText', @sTmp0 OUT

        PRINT @sTmp0
        RETURN
      END

    --  Expecting a 250 response...
    EXEC sp_OAGetProperty @mailman, 'LastSmtpStatus', @sTmp0 OUT
    IF @sTmp0 <> 250
      BEGIN

        PRINT @strResponse
        RETURN
      END

    PRINT 'SMTP password changed!'

    EXEC sp_OAMethod @mailman, 'CloseSmtpConnection', @success OUT
    IF @success <> 1
      BEGIN
        PRINT 'Connection to SMTP server not closed cleanly.'
      END

END
GO