With Catalina I can't send out email without changing to ICloud. instead of Comcast or Gmail. I can use either webmail Comcast or Gmail . Nor do I have a problem sending mail on my iPhone. I hope that Apple can resolve this problem without my having to delete my accounts and lose all of my past emails.
Mac mini, macOS 10.14
With all your accounts active, when you are composing a message be sure to check a dropdown menu on the right above your text. It is there so you can choose which server to use for the account you are using. There is also an option in Mail to use the server for the account in use. Be sure to check that option. Maybe that will help. Otherwise, you can try the following to see if it helps with Mail.
You should try each, one at a time, then test to see if the problem is fixed before going on to the next.
None of the above may help, but they are worth trying. Sometimes they can resolve problems with Mail. If they don't, then you should restore your previous system from your backup or reinstall macOS:
Reinstall El Capitan or Later Without Erasing Drive
Please be sure you back up, if possible.
Have you created an email account in Mail and configured the incoming and outgoing mail servers? Apple does not provide that for you. You need to setup an email account for each different email provider that you use.
Mail settings you might need from your email provider - Apple Support
You need to select your account in Mail's preferences. Then click on the Server Settings button. You need to have the correct addresses for the incoming and outgoing mail servers. Your email password is needed in both sections. If you don't know this information, then it should be available from your email provider's website.
Mail settings you might need from your email provider - Apple Support
Mac Basics- (How to) Use Mail on your Mac
sorry my mistake I didn't explained how to do it.
when you have mail open, on the top bar you have a option saying window> connection doctor, when that window check if the log connection is ticked or not, if it is, I would advise you to open "show logs" and delete the content of it
I have been using Mail for years and the accounts which I told you about are active. Since the update to Catalina I still receive mail from these providers. However, I cannot send them. Every reply needs to be changed to ICloud or it is refused. First I get an error message asking for my Comcast password and when I enter it I get another error message saying that it is unable to verify the account name or password. This happens even when I try to send using Gmail.
First of all, I had already done the first step in your reply. That was how I learned that the only way which I could send an email was through iCloud. This is a problem that occurred with the installation of Catalina. I don't understand the rest of your instructions, but I sincerely hope that something which happened as a result of your product does not require a complete change in my system, which I have had for more than ten years, and which has a lot of data and files on it.
What I am hoping is that the code in Catalina which caused this problem will be fixed. After all, this isn't a problem with my iPhone or IPad which were also updated recently.
I found the connection doctor and also the logs. I can't really read them, but it doesn't look like they show a problem. On the other hand, when I look at my Account page for Comcast it says the outgoing server is off line. This is the source of the problem, but I have no idea how to fix it.
hello, have you tried connection doctor? do you save logs from mail?
Where do I find Connection Doctor on an Apple Computer, or mail logs, for that matter?
Problem with Mail App on Catalina
