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Question:

"Sender syntax error" in Chilkat4Xojo

Nov 17 '16 at 03:12

Hi,

I'm trying to send an email with SendGrid to my ticket system Uservoice and get the following error:

220 SG ESMTP service ready at ismtpd0001p1lon1.sendgrid.net
EHLO Trixis-Mac-Pro.fritz.box<CRLF>
250-smtp.sendgrid.net
250-8BITMIME
250-PIPELINING
250-SIZE 31457280
250-AUTH PLAIN LOGIN
250 AUTH=PLAIN LOGIN
AUTH LOGIN<CRLF>
334 VXNlcm5hbWU6
bWFpbEBiZWF0cml4d2lsbGl1cy5kZQ==<CRLF>
334 UGFzc3dvcmQ6
{PasswordOrCredentials}
235 Authentication successful
MAIL FROM:<Beatrix Willius bwillius@gmx.de><CRLF>
RCPT TO:<tickets@mothsoftware.uservoice.com><CRLF>
DATA<CRLF>
501 Sender syntax error
503 Must have sender before recipient
503 Must have valid receiver and originator
RSET<CRLF>
250 I remember nothing

The code is

  'set up the chilkat version of the socket
  Dim mailman As New Chilkat.MailMan
  Dim success As Boolean = mailman.UnlockComponent("test")
  If (success <> True) Then
    Return
  End If

  'do the smtp details
  mailman.SmtpHost = "smtp.sendgrid.net"
  mailman.SmtpUsername = "username"
  mailman.SmtpPassword = "password"
  mailman.SmtpSsl = True
  mailman.SmtpPort = 465

  // populate the email message to company
  Dim MailToCompany As New Chilkat.Email
  MailToCompany.fromAddress = "<test>"
  MailToCompany.subject = "Error Report"
  call MailToCompany.AddTo("", "tickets @ mothsoftwarexxxuservoicexxxcom")

  success = mailman.SendEmail(MailToCompany)
  If (success <> True) Then
    System.DebugLog(mailman.LastErrorText)
    Return
  End If

  success = mailman.CloseSmtpConnection()
  If (success <> True) Then
    System.DebugLog("Connection to SMTP server not closed cleanly.")
  End If

The problem seems to be specific to SendGrid because I found a couple of mentions at https://github.com/bcit-ci/CodeIgniter/issues/2289 or http://stackoverflow.com/questions/39901300/smtp-mail-server-sendgrid-error-on-submission/39902008. But I don't know how this applies to my code.

Xojo 2016r3, MacOS 10.11, Chilkat plugin from June 2016

Mit freundlichen Grüßen/Regards

Beatrix Willius

http://www.mothsoftware.com Mail Archiver X: The email archiving solution for professionals

Accepted Answer

Hi Beatrix,

The address passed to the "MAIL FROM" command in the SMTP session should only include the email address (not the friendly name)

This is incorrect:

MAIL FROM:<Beatrix Willius bwillius@gmx.de><CRLF>

This is correct:

MAIL FROM:<bwillius@gmx.de><CRLF>

I suspect the issue is that the email object's FromAddress was set to the string "Beatrix Willius bwillius@gmx.de" Make sure the FromAddress is set to "bwillius@gmx.de", and the FromName is set to "Beatrix Willius". An alternative is to set the From property equal to the entire string: "Beatrix Willius bwillius@gmx.de"

See this example: http://www.example-code.com/xojo/email_from.asp

Answer

Thanks! Changing the FromAddress solved the problem.

Mit freundlichen Grüßen/Regards

Beatrix Willius

http://www.mothsoftware.com Mail Archiver X: The email archiving solution for professionals