When trying to verify the setting for a Gmail account, the below error message is generated:
"Warning",0,55403322-0e1a-45b8-b38b-bfbab88161fd,"WebMon.Alerter", "Unable to send email message to: firstname.lastname@example.org, exception: System.Net.Mail.SmtpException: The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required. Learn more at
at System.Net.Mail.MailCommand.CheckResponse(SmtpStatusCode statusCode, String response)
at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, Boolean allowUnicode, SmtpFailedRecipientException& exception)
at System.Net.Mail.SmtpClient.Send(MailMessage message)
at WebMon.Alerter.EmailSender.SendMessage(EmailMessage email, NotificationsSettingsData settings)"
- GFI WebMonitor
The account entered in the SMTP Settings cannot be authenticated, and the test email is not sent.
The error above indicates that GFI WebMonitor is unable to send a test email because authentication is required. To resolve this issue, from the Gmail account settings, access the Sign-in & Security tab and enable the 'Allow less secure apps' option field.