3CX SMTP Server down?

[dustycr]

Hello,
since 4 hours our 3cx is unable to send emails
When i test the smtp server in the mail settings i get the following message.

MailKit.Net.Smtp.SmtpCommandException: Unauthenticated senders not allowed at MailKit.Net.Smtp.SmtpClient.OnSenderNotAccepted(MimeMessage message, MailboxAddress mailbox, SmtpResponse response) at MailKit.Net.Smtp.SmtpClient.d__88.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at MailKit.Net.Smtp.SmtpClient.d__99.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at MailKit.Net.Smtp.SmtpClient.d__99.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at MailKit.Net.Smtp.SmtpClient.Send(FormatOptions options, MimeMessage message, CancellationToken cancellationToken, ITransferProgress progress) at TcxMail.Mail.Send(AlternateView calendarData) Response:

I also tested this on multiple instances and always receive the same error.

Are there any known problems with the mail server?

Version: 15.5.0 Standard

Thanks in advance.

 

[DJimenez]

This issue is not resolved for me. Still getting the "MailKit.Net.Smtp.SmtpCommandException: Unauthenticated senders not allowed" error when testing the 3cx smtp server.

 

[DavidC]

I'm trying to provision softphones, this is impossible without the welcome email. So I am stuck, please sort this rubbish out.

 

[cobaltit]

It's not impossible without the welcome email. You can login to the web client and scan the QR code.

 

[DavidC]

That is an option if using a mobile device but not if you are installing on a Laptop or PC.

Well done 3cx :-( .

 

[cobaltit]

Hello,

Please note that users currently using the 3CX SMTP may face some difficulties sending emails. We are currently working on restoring full service as soon as possible.

Is a RFO going to be issued for this outage?

 

[YiannisH_3CX]

The issue was caused due to an unexpected disruption of communication between the activation server and the server that dispatches the emails.
Full functionality was restored the same day November 9 at approximately 5:00 p.m. UTC