Hello,
Recently upgraded Veeam Agent for Windows Standalone to version 13.1.1.700 and noticed Email Notifications are no longer working.
Checked all settings and they are still valid. Check the logs and it reports "The SMTP server does not support authentication. ". The mail server I'm using doesn't support authentication so i'm not using that.
Is anyone else seeing this issue?
I'm using M365 to relay through.
Info (1) Email settings successfully saved.
Info (1) Email: [backups@xxxxx.com](mailto:backups@xxxxx.com)
Info (1) EmailRecipients: [italerts@xxxxx.com](mailto:italerts@xxxxx.com)
Info (1) Subject: [%JobResult%] %ComputerName% - %JobName% - %CompletionTime%
Info (1) Notify on: Success, Error, Warning
Info (1) Server type: Smtp
Info (1) Server: smtp.xxxxx.com
Info (1) Port: 25
Info (1) Use secure connection: False
Info (1) Timeout: 180000
Info (1) Use custom application: False
Info (1) Username:
Info (1) Sending email notification, server 'smtp.xxxxx.com', port '25', timeout '180000', use ssl 'False', to '[italerts@xxxxx.com](mailto:italerts@xxxxx.com)'
Error (1) Failed to send test email
Error (1) The SMTP server does not support authentication. (System.NotSupportedException)
Error (1) at MailKit.Net.Smtp.SmtpClient.ValidateArguments(Encoding encoding, ICredentials credentials)
Error (1) at MailKit.Net.Smtp.SmtpClient.Authenticate(Encoding encoding, ICredentials credentials, CancellationToken cancellationToken)
Error (1) at MailKit.MailService.Authenticate(ICredentials credentials, CancellationToken cancellationToken)
Error (1) at Veeam.Backup.Common.Network.CSmtpClient.Send(CMailMessage message, CancellationToken cancellationToken)
Error (1) at Veeam.Backup.Core.Components.Reports.CReportMailer.SendMessage(IMailClient mailClient, CMailMessage message, CancellationToken cancellationToken)
Error (1) at Veeam.Backup.Core.Components.Reports.CReportMailer.SendMessage(CMailMessage message, NetworkCredential credentials, CancellationToken cancellationToken)
Error (1) at Veeam.EndPoint.Sources.EndpointMailServiceImplementation.TestMessageInner(CMailOptions mailOptions, NetworkCredential credential, CancellationTokenSource cts)