SMTP Error

[ykarami]

3CX is no longer able to send voicemails through our internal SMTP server. When I click on test I get the below error message:

• MailKit.Net.Smtp.SmtpCommandException: 5.7.1 Unable to relay for at MailKit.Net.Smtp.SmtpClient.OnRecipientNotAccepted(MimeMessage message, MailboxAddress mailbox, SmtpResponse response) at MailKit.Net.Smtp.SmtpClient.ProcessRcptToResponse(MimeMessage message, MailboxAddress mailbox, SmtpResponse response) at MailKit.Net.Smtp.SmtpClient.FlushCommandQueueAsync(MimeMessage message, MailboxAddress sender, IList`1 recipients, Boolean doAsync, CancellationToken cancellationToken) at MailKit.Net.Smtp.SmtpClient.SendAsync(FormatOptions options, MimeMessage message, MailboxAddress sender, IList`1 recipients, Boolean doAsync, CancellationToken cancellationToken, ITransferProgress progress) at MailKit.Net.Smtp.SmtpClient.SendAsync(FormatOptions options, MimeMessage message, MailboxAddress sender, IList`1 recipients, Boolean doAsync, CancellationToken cancellationToken, ITransferProgress progress) at MailKit.Net.Smtp.SmtpClient.Send(FormatOptions options, MimeMessage message, CancellationToken cancellationToken, ITransferProgress progress) at TcxMail.Mail.Send(AlternateView calendarData) Response:
  [/LIST]

 

[ChrisC_3CX]

Does it work okay if you use 3CX's SMTP?

What exact 3CX Version are you running(Dashboard >> Information >> License)?

 

[ykarami]

Yes, the 3CX's SMTP works fine and the version I'm using is 16.0.9

 

[ChrisC_3CX]

I'd first make sure that you can activate the license in 'Settings >> License >> click on "Refresh License Key information"'

If you do not get an error message when you hit the "Refresh..." button but still cannot pass the SMTP test, you might need to have a look on the SMTP end too.

 

[ykarami]

I have no problem activating the license and I looked at the SMTP logs and I'm not seeing an issue there.

 

[ykarami]

Good morning,

Any idea on how I can resolve this issue?

 

[ChrisC_3CX]

Any idea on how I can resolve this issue?

I'm afraid there's not much I can suggest as the problem is not occurring with the 3CX SMTP. That is why I recommended checking the SMTP side for any errors that may hint as to what might be causing things.