You said that you had cancelled Xfinity. No, sorry, I am confused by your posts. It may be best if you don't alter any settings. I was going by your post that 'I cancelled Xfinity' and that you said that you couldn't send email because of an ESMTP Server message.

Sorry if I misled you. I cancelld everything I had with Xfinity,....TV, Internet, mobile phone. But they said I could keep using the email and any third part server ( Thunderbird ) that I had already been using. So because Thunderbird has been not working properly, I have had to use Xfinity email to send my emails. But I perfer Thunderbird. It is a much better server.

So I guess this means you won't be able to help me?

I have been concentrating on sorting out you sending emails (I wrote 'receiving' in a recent message and have left it there as you responded to it. I meant 'sending'). The settings appear to be wrong.

I am a bit puzzled that you have ONE account, the settings for which are incorrect but you can still send emails. If you cancelled Xfinity then TB needs to connect through the new Mail Provider.

You state that "Thunderbird needs the Xfinity to operate" but it doesn't. TB is a stand alone Mail Program that has to be set up to connect to servers owned/used by people that you have paid/registered with to use.

I think, perhaps, we should leave it here. If the settings appear, please try them - but you may need to alter them back to the original. However, from where I'm sitting, that's the action that needs completing.

Sorry if I misled you. I cancelld everything I had with Xfinity,....TV, Internet, mobile phone. But they said I could keep using the email and any third part server ( Thunderbird ) that I had already been using. So because Thunderbird has been not working properly, I have had to use Xfinity email to send my emails. But I perfer Thunderbird. It is a much better server. So I guess this means you won't be able to help me?

There are a fair few misunderstandings in your post. I understand that you are struggling with computers. That isn't a problem...

...but I think the way forward is to ask someone to do the work I suggest if the post is approved (it will be way, way above this series/thread of posts).

Let me just add that Thunderbird is *not* a server. It is not an email account. It is a piece of software that uses an email account to manage emails. The sending settings are incorrect for the email account that you have told me you have.

The bottom line is that it's your choice what you do. I hope it works out for you whatever you choose.

I am a bit puzzled that you have ONE account, the settings for which are incorrect but you can still send emails. If you cancelled Xfinity then TB needs to connect through the new Mail Provider.

Yes, Xfinity is still my Mail Provider. I was told I could keep using that forever, which I have been except for the sporadic sending of emails. I was told that it should work but no one has been able to correct the problem.

Let me just add that Thunderbird is *not* a server. It is not an email account. It is a piece of software that uses an email account to manage emails. The sending settings are incorrect for the email account that you have told me you have.

I understand that. That is why I said I still need Xfinity for Thunderbird to operate. So you are telling me that the settings are incorrect for Xfinity Email? I am toatally confused. I guess I will just not use Thunderbird.

I don't pay Xfinity for anything, not even email. They just allow me to keep using it.

No, it doesn't work. First, I only have one email address. Second, Frontier is only an Internet provider. It is not equiped as a mail server. I still need Xfinity mail server in order to operated a third party email. All Fronteir does is connect me to the Internet. I also have to go to an outside Moblile phone service. I DO have an Xfinity email account. It is free, I don't pay for it.

I hope you understand what I tried to explain. I don't know any other way to explain it. Thunerbird always worked with Xfinity for years. There is no reason that it should not continue to work now. In my mind it brings us back to a problem with Thunderbird.

OH, one other thing. I have never had a problem receiving email with Thunderbird. My problem is SENDING email. I have said this several times.

The moderator has approved my post but I wouldn't try and input the values or your Comcast connection will disappear.

You need to get someone who knows about email and email connections to sit down and work out what email accounts you have and then to set up different accounts in Thunderbird for each of them.

I don't work for Thunderbird - I only help out in this Forum. But I can assure you that - from where I'm sat - there is nothing wrong with Thunderbird. It's just that it hasn't been set up properly.

I appreciate you trying to help, but it appears I am right back where I started. From where I sit, Thunderbird is the "pits". It makes no sense to me. One day it is working and then it is not. No changes were made on my end, so what am I to think? It all points back to Thunderbird. No wonder it is free.

I appreciate you trying to help, but it appears I am right back where I started. From where I sit, Thunderbird is the "pits". It makes no sense to me. One day it is working and then it is not. No changes were made on my end, so what am I to think? It all points back to Thunderbird. No wonder it is free.

It's a shame you think that. If it was set up properly, we could decide whether it could handle your accounts but, as it stands, you are trying to send email through a server that you don't have an account with and it isn't any wonder that it's refusing you a connection. As I said, the SMTP server needs to be set up properly for a start - but I would think that there are some other issues with the new account that need resolving. Hope you can find someone to sit in front of the computer and sort it out.

OK, apparently you don't listen to what I say. I have an email account with Xfinity. If I call Xfinity, they ask for my info, and then say ok we have an account for you. I can use Xfinity email all the time. Don't worry about it. Thanks for your help but I am a little bit tired of everyone "passing the Buck" and trying to blame someone else. Pretty strange that everyone is correct and no one is wrong. I'm all done with Thunderbird. This has become a joke. I read through a lot of the questions on this site and it appears that a LOT of people have a problem with Thunderbird so it is not just me. If Thunderbird ever gets serious about their site, I might give it another chance, but they definitely need a support team.

If you call Xfinity and tell them you use any third party mail client they will blame the third party mail client. They only support their web mail service from their phone support.

So can we back up here some what. your email address you are sending from. What is after the @ in that email address? Is am guessing is is @comcast.net in which your SMTP server settings for that address should be the xfinity ones.

Excessive failed authentication.

Are you asked at any time for a password? How many email do you consider "a few"? Counting each email address in the message to CC or BCC as a separate email as that is how comcast counts them. They add up fast is you have 100 members of your church congregation CCed to each if those emails.

Right now it will not send any emails. It doen't matter anymore. I am not wasting anymore time on a flawed Thunderbird program and have deleted the program from my computer .

Your inability to use the software does not make it flawed or broken.

But I will close this topic as you no longer use Thunderbird.

That's the kind of response I have come to expect here. Blame anyone else. It is easy to blame someone else when you don't have a solution.