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(PowerBuilder) SMTP SSH Tunneling (Port Forwarding)Demonstrates how to setup an SSH tunnel for SMTP. This example connects to an SMTP sever via an SSH tunnel and sends an email.
integer li_rc oleobject loo_Mailman integer li_Success string ls_SshHostname integer li_SshPort oleobject loo_Email // The mailman object is used for sending (SMTP) and receiving (POP3) email. loo_Mailman = create oleobject li_rc = loo_Mailman.ConnectToNewObject("Chilkat_9_5_0.MailMan") if li_rc < 0 then destroy loo_Mailman MessageBox("Error","Connecting to COM object failed") return end if // Any string argument automatically begins the 30-day trial. li_Success = loo_Mailman.UnlockComponent("30-day trial.") if li_Success <> 1 then Write-Debug loo_Mailman.LastErrorText destroy loo_Mailman return end if // Connect to an SSH server and establish the SSH tunnel: // The SSH hostname may be a hostname or an // IP address, such as "192.168.1.108". // The port is typically 22 (the standard port for SSH). ls_SshHostname = "www.my-ssh-server.com" li_SshPort = 22 li_Success = loo_Mailman.SshOpenTunnel(ls_SshHostname,li_SshPort) if li_Success <> 1 then Write-Debug loo_Mailman.LastErrorText destroy loo_Mailman return end if // Authenticate with the SSH server via a login/password // or with a public key. // This example demonstrates SSH password authentication. // Note: This is not authenticating with the SMTP server, it is // for authenticating with the SSH server, which is separate. li_Success = loo_Mailman.SshAuthenticatePw("sshLogin","sshPassword") if li_Success <> 1 then Write-Debug loo_Mailman.LastErrorText destroy loo_Mailman return end if // OK, the SSH tunnel is setup. The mailman may // be used exactly the same as usual, except all communications // are now sent through the SSH tunnel. // Set the SMTP server. loo_Mailman.SmtpHost = "smtp.my-smtp-server.com" // Set the SMTP login/password (if required) loo_Mailman.SmtpUsername = "smtpLogin" loo_Mailman.SmtpPassword = "smtpPassword" // Create a new email object loo_Email = create oleobject li_rc = loo_Email.ConnectToNewObject("Chilkat_9_5_0.Email") loo_Email.Subject = "This is a test" loo_Email.Body = "This is a test" loo_Email.From = "Chilkat Support <support@chilkatsoft.com>" li_Success = loo_Email.AddTo("Chilkat Admin","admin@chilkatsoft.com") // The call to SendEmail automatically connects to the SMTP // server via the SSH tunnel (if not already connected). // Because the SSH tunnel has been previously setup, // this does not establish a direct connection with the SMTP // server. It directs the SSH server to establish the connection. // After SendEmail completes, the connection (i.e. session) remains // open so that subsequent SendEmail calls may use the // same SSH tunnel. li_Success = loo_Mailman.SendEmail(loo_Email) if li_Success <> 1 then Write-Debug loo_Mailman.LastErrorText destroy loo_Mailman destroy loo_Email return end if // If you're curious, have a look at LastErrorText after // a successful send. You'll see detailed information that // confirms the SSH tunneling. Write-Debug loo_Mailman.LastErrorText // Note: Some SMTP servers do not actually send the email until // the connection is closed. In these cases, it is necessary to // call CloseSmtpConnection for the mail to be sent. // Most SMTP servers send the email immediately, and it is // not required to close the connection. Write-Debug "Mail Sent!" destroy loo_Mailman destroy loo_Email |
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