This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Cari Bantuan

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Pelajari Lebih Lanjut

Cannot send or receive GMail messages in Thunderbird

  • 5 balas
  • 2 memiliki masalah ini
  • 1 kunjungan
  • Balasan terakhir oleh Mike Flint

more options

Good afternoon I have 2 accounts in Thunderbird - a gmail and a Yahoo. Both were running great from the time I set up Thunderbird about 2 weeks ago until yesterday when the gmail account stopped sending and receiving. The Yahoo account is still fine. I have not received a message in Thunderbird in my gmail account since, although I have logged in on the web and confirmed that there are incoming messages in my account.

When I attempt to send a message from the gmail account I receive an error message - "Add Security Exception". If I click "View" nothing happens. If I click "Get Certificate" the section "Unknown Identity" changes to "No Information Available". However, when I cancelled the message I noticed a new error message appeared - "Send Error Message" and when I returned to the main Thunderbird screen I noticed a new tab appeared "Certificate for smtp.gmail.com".

As you can imagine, I seem to be getting nowhere with this and as I am only an intermediate user with computers I don't know where to go next. Subsequently, I sincerely hope that someone out there is able to help me. Any assistance would be very much appreciated.

The following are my Thunderbird settings for the gmail account :- Incoming Server Server type : IMAP Mail Server Server name : imap.gmail.com Port : 993 User name : [myname]@gmail.com Connection security : SSL/TLS Authentication method : OAuth2

Outgoing server Description : Google Mail Server name : smtp.gmail.com Port : 465 Connection security : SSL/TLS Authentication method : OAuth2 User name : [myname]@gmail.com


A copy of the error messages as well as the Certificate are attached.

Good afternoon I have 2 accounts in Thunderbird - a gmail and a Yahoo. Both were running great from the time I set up Thunderbird about 2 weeks ago until yesterday when the gmail account stopped sending and receiving. The Yahoo account is still fine. I have not received a message in Thunderbird in my gmail account since, although I have logged in on the web and confirmed that there are incoming messages in my account. When I attempt to send a message from the gmail account I receive an error message - "Add Security Exception". If I click "View" nothing happens. If I click "Get Certificate" the section "Unknown Identity" changes to "No Information Available". However, when I cancelled the message I noticed a new error message appeared - "Send Error Message" and when I returned to the main Thunderbird screen I noticed a new tab appeared "Certificate for smtp.gmail.com". As you can imagine, I seem to be getting nowhere with this and as I am only an intermediate user with computers I don't know where to go next. Subsequently, I sincerely hope that someone out there is able to help me. Any assistance would be very much appreciated. The following are my Thunderbird settings for the gmail account :- Incoming Server Server type : IMAP Mail Server Server name : imap.gmail.com Port : 993 User name : [myname]@gmail.com Connection security : SSL/TLS Authentication method : OAuth2 Outgoing server Description : Google Mail Server name : smtp.gmail.com Port : 465 Connection security : SSL/TLS Authentication method : OAuth2 User name : [myname]@gmail.com A copy of the error messages as well as the Certificate are attached.
Lampiran tangkapan layar

Solusi terpilih

Mike Flint said

Hi Matt The only response I get seems to be that a new tab is opened on the Thunderbird main screen listing all the details of a Certificate. I did attach a screenshot of this in my initial post. Hope you can read it. I had trouble copying it. Cheers Mike

Read what? I see your original image

But this I can not read.

Perhaps trying to stitch multiple screens of information into a single image just makes it not work. I really do not know. What is important here is the issuer that is recorded and shown in that certificate. Just in case I am correct in my assumption you are using Nortons I will include the link to their discussion https://community.norton.com/en/forums/auto-update-norton-360-v2449067835-now-causes-security-exception-thunderbird

Baca jawaban ini dalam konteks 👍 0

Semua Balasan (5)

more options

Are you another of the Norton customers that are loosing access to email because of some update they have released? All the topics I have seen have included self signed certificates issues by Norton.

What does it say when you click the view button?

Membantu?

more options

Hi Matt

The only response I get seems to be that a new tab is opened on the Thunderbird main screen listing all the details of a Certificate. I did attach a screenshot of this in my initial post. Hope you can read it. I had trouble copying it.

Cheers Mike

Membantu?

more options

Solusi Terpilih

Mike Flint said

Hi Matt The only response I get seems to be that a new tab is opened on the Thunderbird main screen listing all the details of a Certificate. I did attach a screenshot of this in my initial post. Hope you can read it. I had trouble copying it. Cheers Mike

Read what? I see your original image

But this I can not read.

Perhaps trying to stitch multiple screens of information into a single image just makes it not work. I really do not know. What is important here is the issuer that is recorded and shown in that certificate. Just in case I am correct in my assumption you are using Nortons I will include the link to their discussion https://community.norton.com/en/forums/auto-update-norton-360-v2449067835-now-causes-security-exception-thunderbird

Membantu?

more options

Thanks Matt

Issue resolved. I cannot thank you enough. Your blood is worth bottling.

Thanks again Mike

Membantu?

more options

PS: I think I will have to look for an alternative to Norton 360.

Membantu?

Ajukan pertanyaan

Anda harus masuk ke akun Anda untuk membalas kiriman ini. Sila mulai pertanyaan baru, jika Anda belum memiliki akun.