Even though the email accounts use the same domain, each one needs its own SMTP server, as it is the server that determines the sender. Give each a unique description to ensure you assign each appropriately. When done, you should see six incoming servers and six outgoing servers.

Even though the email accounts use the same domain, each one needs its own SMTP server, as it is the server that determines the sender. Give each a unique description to ensure you assign each appropriately. When done, you should see six incoming servers and six outgoing servers.

How can I do this, please ?

-click tools>account setting and scroll down to Outgoing servers (SMTP) where it displays your SMPT servers. Click the 'add ' button. Create each SMTP server identical to the original one, but each with a different email id. Be sure to give each a different description. -Next, click the account pane for each account and at the bottom is a place to link the account to the appropriate SMPT server. Do that for all six accounts.

-click tools>account setting and scroll down to Outgoing servers (SMTP) where it displays your SMPT servers. Click the 'add ' button. Create each SMTP server identical to the original one, but each with a different email id. Be sure to give each a different description. -Next, click the account pane for each account and at the bottom is a place to link the account to the appropriate SMPT server. Do that for all six accounts.

Hello Mr. David I uploaded video on Google drive to show you the setting I have and the problem

Please check and inform me

https://drive.google.com/file/d/138YG8A5Do9U7EIRyUkTKD3xNEev3j15K/view?usp=sharing

Thanks in advanced

You did not follow my suggested steps. So I can see the picture more clearly, would you please go to settings>outbound servers (SMTP) and do a screenprint? That should show a list of six SMTP servers.

Dear sir,

Please check attached photos

I regret that I cannot identify the specific issue, but the problem remains in the configuration somewhere. I watched the movie several times , but I could not follow the complete thread. It looked like you forwarded to Yahoo and received a response, but I could dig no deeper. All I can suggest is to carefully review the setting for the sending account and verify that there are no identities defined for any account. Otherwise, I am at a loss.

I regret that I cannot identify the specific issue, but the problem remains in the configuration somewhere. I watched the movie several times , but I could not follow the complete thread. It looked like you forwarded to Yahoo and received a response, but I could dig no deeper. All I can suggest is to carefully review the setting for the sending account and verify that there are no identities defined for any account. Otherwise, I am at a loss.

Unfortunately, I tried very hard and I appreciate your efforts with me

I forwarded the mail to Yahoo to show you that I'm sending from address and receiving from another This is strange, given that you have seen the settings and each account has its own settings

I regret that I have to move to another program such as Outlook and others

I do not believe this is a Thunderbird flaw; instead, there is something in one of the settings. The video was difficult to follow because the sample email was difficult to follow. You might try creating a sample email with subject in all caps so that it is easy to follow. For example, it appeared that you forwarded a message from Yahan and it was returned to same. That is, from what I saw, there appeared to be no problem.

Could you join me AnyDesk ?

Maybe you can see all setting clearly and find the problem I believe there a lot of users have same problem