System.Net.Mail.SmtpClient.Send Failed With an Error Message

  • 30/11/2023
  • 2 minutes to read

Question

System.Net.Mail.SmtpClient.Send failed with the following message:

A call to System.Net.Mail.SmtpClient.Send failed with the following message. A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond [IP address and port number]

What do I do?

Answer

The error occurred because the mail server connection timed out, likely due to a restriction on the number of emails you can send per minute.

To solve the issue in a cloud installation, follow these steps:

  1. Open Document Output Setup.
  2. Look for Max no. of mails per minute in the General FastTab.
  3. Enter 29 in this field.

To solve the issue in a on-premises installation, follow these steps:

  1. Open Document Output SMTP Setup.
  2. Look for Max no. of mails per minute in the General FastTab.
  3. Enter 29 in this field.

This adjustment will help prevent the error in the future. By setting the connection timeout to 29, you ensure a smoother email sending process.