B4X

Authenticate with the SMTP Server

Demonstrates the Chilkat MailMan.SmtpAuthenticate method, which authenticates with the SMTP server using the current SMTP property settings, such as SmtpUsername and SmtpPassword. It is typically called after SmtpConnect. This example connects and then authenticates.

Background: SMTP authentication is a separate step from connecting: after the EHLO handshake, the client proves its identity via the AUTH command using a mechanism the server offers (LOGIN, PLAIN, CRAM-MD5, XOAUTH2, etc.). Splitting connect and authenticate into explicit calls lets you pinpoint exactly which step fails — and hold an authenticated connection open to send many messages efficiently.

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Dim success As Boolean = False

'  Demonstrates the MailMan.SmtpAuthenticate method, which authenticates with the SMTP server
'  using the current SMTP property settings (such as SmtpUsername and SmtpPassword).  It is
'  typically called after SmtpConnect.

Dim mailman As ChilkatMailMan
mailman.Initialize("mailman")

'  Configure the SMTP server connection.
mailman.SmtpHost = "smtp.example.com"
mailman.SmtpPort = 465
mailman.SmtpSsl = True
mailman.SmtpUsername = "user@example.com"
mailman.SmtpPassword = "myPassword"

'  Connect first, then authenticate.

success = mailman.SmtpConnect
If success = False Then
    Log(mailman.LastErrorText)
    Return
End If


success = mailman.SmtpAuthenticate
If success = False Then
    Log(mailman.LastErrorText)
    Return
End If


Log("Authenticated with the SMTP server.")