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Error Sending Email - 451 4.2.0 Internal queueing error. Please check the message and try again

  • 10 replies
  • 1 has this problem
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  • Last reply by GoldC

Was able to send email earlier today and I have made no changes to my computer. Now I am unable to send mail. I've tried rebooting, resetting my modem and router. I finally disconnected from my home internet and am using my Verizon usb. I never have an issue sending mail with that. However, I still cannot send mail. I've checked my outgoing smtp and again no changes have been made. Can someone tell me what this error means? 451 4.2.0 Internal queueing error. Please check the message and try again

Was able to send email earlier today and I have made no changes to my computer. Now I am unable to send mail. I've tried rebooting, resetting my modem and router. I finally disconnected from my home internet and am using my Verizon usb. I never have an issue sending mail with that. However, I still cannot send mail. I've checked my outgoing smtp and again no changes have been made. Can someone tell me what this error means? 451 4.2.0 Internal queueing error. Please check the message and try again

Modified by GoldC

Chosen solution

Yes, exactly. It might be a temporary overload, intermittent problem, something like that. Here is an example: https://community.talktalk.co.uk/t5/Product-Archive/Issues-with-sending-emails-on-Tiscali-account/td-p/2053054 You will notice from that example that multiple people using the same email provider report similar errors at the same time. Agnes

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As suddenly as it broke, it suddenly started working again. However, I would still like an answer as to what this error meant in case it comes back. Thanks!

Hi Usually this is a temporary problem at the email server - does your error message not say it is a server message? or which server sent that response? So - most likely something failed at the SMTP service, it was a temporary problem, so it was fixed. Nothing you did or Thunderbird did caused it. You can search for the error message online and you may find more technical descriptions if you would like to know more. Hope this helps! Agnes

So your saying this would be my internet provider's issue? I don't think it mentioned server error.

Chosen Solution

Yes, exactly. It might be a temporary overload, intermittent problem, something like that. Here is an example: https://community.talktalk.co.uk/t5/Product-Archive/Issues-with-sending-emails-on-Tiscali-account/td-p/2053054 You will notice from that example that multiple people using the same email provider report similar errors at the same time. Agnes

re :451 4.2.0 Internal queueing error.

That is an error message from server. It cannot handle the number of emails trying to use the server and is having a temp blip.

Ok I'm not understanding. I'm emailing from my laptop at home. My ISP is Spectrum. So are you saying it's Spectrum's server? It does come up and say that the email was delivered right before the error comes up. Of course I'm not getting it now so I do I call Spectrum the next time it happens?

It could well be the receiving server. Either way, there is nothing you can do about a server issue other than wait. Does it occur when you send to various email addresses that are on different servers ? eg: outlook, gmail, and you cannot send anything to anyone who obviously uses different servers. If yes, then it could be spectrum. Note: spectrum will be handing quite a few because they took over from time warner.

When it was happening it was pretty random. So sometimes I could reply to someone and sometimes not. I tried making sense out of it but I do think it's spectrum. Thanks

Hi - sorry I was not quite clear answering earlier. It would be your email provider's problem. Not your Internet connection provider, unless they are also providing you email service. As ToadHall said, there is really nothing you can do to fix it, and as you noticed it comes and goes. Spectrum's servers may just be overloaded - too much traffic to handle - and then it eases and things work again. Agnes

got it. It is Spectrum then.