Sorry if I ramble a bit in my last post. Information came as I searched and a full rewrite was just more than I could face.

Thanks for that detailed examination, I toggled that option and it did indeed stop that message, will this effect anything on my other email accounts?

Thanks again.

I'm getting this message for all operations on Thunderbird as well. The last of the error message sometimes reads "Unrecognized command: ID" and sometimes reads " The specified mailbox does not exist" This only started several weeks ago on my Win 10 laptop, my 2 Win 7 laptops don't have this problem. I'll try Matt's suggested solution

I too am frustrated by the same issue. Spectrum says it does not support Thunderbird and therefore the call support stops. For ex-time warner customers, it appears that we must use the following to get email to work at all (at least in San Diego): incoming server: mail.twc.com, IMAP, port: 993, SSL/TLS outgoing server: mail.twc.com, SMTP, port: 587, STARTTLS

Checking/unchecking the "allow immediate server notifications" did not fix the problem for me. After about 1 week of receiving email, I suddenly don't get any (as if the system is clogged). Stopping/restarting Thunderbird seems to help. (By the way, the email was there when viewed using Spectrum's web email app.) I am using Thunderbird 64-bit version 68.3.1 and Windows 10 Home.

I started receiving this same error message about a month ago, but I am still able to send and receive e-mail. I cross reference it to my tablet e-mail to be sure nothing is missing. I have 4 separate "username".twc.com e-mail accounts on Thunderbird, and only one of them receives the Unrecognized Command: ID error. I was looking through my settings for each e-mail address and noticed one major difference. The one getting the error message is set up as IMAP. The 3 accounts that do not get the error were somehow done as POP3.

I have not tried re-setting the account up as POP3 yet. It is not my primary e-mail account, so I only do a few e-mails a week in or out with it. I was just wondering if everyone getting the error is set up as IMAP also, and has anyone tried converting to it to a POP3 account?

All of my accounts with this issue are TWC and IMAP, the fix listed above fixed it.

I would not like POP email, with IMAP the mail stays on the server until you delete it, on POP the mail is transferred to the device you are reading it on and is then unavailable from other devices.

I have an old Time Warner (rochester.rr.com) email and I am getting this issue as well. It started a few weeks ago.

When I first open Mozilla I get the message "The mail server for account XXX@rochester.rr.com responded: Unrecognized command: ID." I seem to be able to get my emails but I get that message all the time. I am using the mail.twc.com settings.

However, I am also unable to send emails. When I try to send, I get the error message from the picture I posted. I sometimes also get "An error occurred while sending mail: The mail server sent an incorrect greeting: p-impout001.msg.pkvw.co.charter.net cmsmtp 8.9.80.143 blocked AUP#CMDNS" if I set it to send with no SSL.

My parents also have .rr emails and their email works fine, different computer but same Mozilla, same settings as I have. The only difference is that they have Spectrum (I have a sub account off their account) and I am in a different house and I have Greenlight. Could that make a difference?

I called Spectrum and they gave me mobile.charter.net for the settings but then I could not send or receive and I got an error about being unable to connect to the server and was asked for my password over and over. They told me to call Mozilla and gave me an 888-828-6821 number which according to Google seems to be a scam?

I can send and receive emails fine using the Spectrum webmail.

'Incorrect greeting' implies you have the wrong settings. For Spectrum, see an earlier post in this thread:

mobile.charter.net. for both the incoming (IMAP port 993) and outgoing (port 587) servers, with Connection security = SSL/TLS, authentication = normal password, and User Name = email address.

Note that the security on port 587 should be SSL/TLS, not the usual STARTTLS:

https://support.mozilla.org/en-US/questions/1234783#answer-1157069

sfhowes said

'Incorrect greeting' implies you have the wrong settings. For Spectrum, see an earlier post in this thread: mobile.charter.net. for both the incoming (IMAP port 993) and outgoing (port 587) servers, with Connection security = SSL/TLS, authentication = normal password, and User Name = email address. Note that the security on port 587 should be SSL/TLS, not the usual STARTTLS: https://support.mozilla.org/en-US/questions/1234783#answer-1157069

I tried those settings and all it does is ask me for my password over and over and I get a message that said it can't connect to the server. I even tried making a new password with those settings and I still get the same message.

You can't make a new password with TB. TB only applies the password you've set up on the mail provider's site. Once you've confirmed a password by logging into the account through webmail, open Tools/Options/Security/Passwords/Saved Passwords, delete the old or obsolete passwords, restart TB, and enter the new password when prompted.

Hello Matt, I have this problem also and I just called Spectrum and the tech told me that since I use TB, as a third party, you TB, have to change the settings!!! I do not want to change anything in the Settings because I don't want to ruin my TB settings and stop receiving my emails and my Hotmail emails also.

Is there a way I can send you their email with the Links for me to go look at and how to change the Settings, so you could check this out at TB's end, so I don't ruin my Setting?

Also, before I called Spectrum I chatted with one person and I was told I am the first and only person who contacted them with this wrong ID message, so as far as they are concerned, they are NOT at fault because they did not receive complaints from other people about this, I was told by that one person!!! Go figure!!!!! Thanks for your time.

Just change the setting. It amount to nothing more than pulling the light bulb out of the seat belt warning light in your car. The light goes out, but nothing else changes.

Spectrums servers are incorrectly configured, that is clear from the log file I was sent. Just keep their apparent competence in mind when selecting you ISP next time. The cheapest quote is not necessarily the best.

Well Matt, I was duped, they did not send Settings Helps, it was how to set up an account, I read everything and there is NO Settings information at all, so, I will have to live with this also. I thought contacting then would help but they blame TB's as third party!!! Thanks for your reply though, much appreciated!

That setting is easy to change and I have found no ill effects from changing it on any other of my accounts.

D B Kelly said

That setting is easy to change and I have found no ill effects from changing it on any other of my accounts.

Nor is anybody. It is the digital equivalent of taking the bulb out of the seat belt warning light in a car. The light goes out but nothing else changes.

It may be easy for someone who know what to do, which in not me, since they did not send the Settings I should fix I have no clue what to change, period!

Bibb said

It may be easy for someone who know what to do, which in not me, since they did not send the Settings I should fix I have no clue what to change, period!

Then I suggest you actually read instead of write. I posted very detailed analysis and steps to fix the issue here in this thread.

Just for you I will repeat the salient point, the instruction you are complaining are on here.

There is a global setting to suppress Thunderbird's use of the ID command. Use the Config Editor to set mail.server.default.send_client_info to false (right click the preference in the Config Editor to get the menu of actions.

Oh dear Matt, I am very happy to inform you that " I had read 'most' of your thread for this issue, and two times mind you, but, to me it was becoming too techy and going into the Config Editor scared the heck out of me to go change something in there, or even having the guts to try to do what I just did. But now, I did changed the the Setting you sent and when I restarted my pc and opened TB again it did an Update and I haven't seen that ID message! I will stop "complaining" now thanks to you!!!  :-D  ;-D

Again Matt, another thing "complaining again",

Now that I changed the Config Editor my Calendar does not work properly, it does not show the people's name on the right side panel under New Event where they used to show, it shows only the Today, Tomorrow and Upcoming (5 days). A few days ago I had help from sfhowes to put the Calendar back, and I was seeing the names of the people and now there are no more names since the changes in Config Editor.

I just re-did all the steps that sfhowes had sent me before, added the same info in the settings but this time I don't see the names of the people for Today, Tomorrow and Upcoming days any longer! Can this be fixed?

Thanks again!

Bibb said

Again Matt, another thing "complaining again", Now that I changed the Config Editor my Calendar does not work properly, it does not show the people's name on the right side panel under New Event where they used to show, it shows only the Today, Tomorrow and Upcoming (5 days). A few days ago I had help from sfhowes to put the Calendar back, and I was seeing the names of the people and now there are no more names since the changes in Config Editor. I just re-did all the steps that sfhowes had sent me before, added the same info in the settings but this time I don't see the names of the people for Today, Tomorrow and Upcoming days any longer! Can this be fixed? Thanks again!

then I suggest you return to your topic and ask there. https://support.mozilla.org/en-US/questions/1276479 or open a new topic if you think it is different to your last issues. I would suggest it is the latter, as your last topic appears to be you did not have the Lightning add-on installed.

The config editor change has nothing at all to the with the calendar. It stops an information item entering the communication stream that the server is supposed to do nothing with at all, other than appear in the logs so humans reading them can identify the software being used. It is diagnostic information.

I will not continue this discussion here at is is off topic to the question and everyone that posted to this topic gets an email every time something is posted. They just do not need the SPAM. It is one of the reasons people are asked to open their own question if the information in the thread does not help.