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Resolved Rejecting the email and Duplicate headers error when sending multiple Gmail recipients using SMPT and n_cst_winsock object
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  1. DIPANJAN DUTTA
  2. PowerBuilder
  3. Friday, 31 March 2023 06:39 AM UTC

Hello Experts,

Error message received from Gmail when sending email to multiple Gmail recipients  it also indicates that seeing duplicate headers and rejecting the email by Gmail.

To send email we are using SMPT protocol and following objects

  1. n_cst_mailservice
  2. n_cst_winsock
  3. n_cst_smtp (inherited from n_cst_winsock)

 

The data portion of the message look like following when sending a single email address in 2 Gmail account marked in yellow.

From: <dipanjan.dutta.21281@gmail.com>

User-Agent: TopWiz PowerBuilder 17.2 SMTP Object

X-Accept-Language: en-us, en

MIME-Version: 1.0

To: <datta.dipanjan@gmail.com>

To: <duttadipanjan@gmail.com>

Reply-To: <dipanjan.dutta.21281@gmail.com>

Subject: Customer: Your Company Invoice: XXXXXXXXX 3/27/2023 is Attached

Content-Type: multipart/mixed;

 boundary="2AF3270B-5413-43B5-286A-080C00000000"

 

etc…………

 

Could anyone help me on that? Advance thanks for your help.

 

Thanks & Regards

Dipanjan

Composite report with occasional blank pages Using QueryMode with APIs
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