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I have been Using Thunderbird for about a month. I have configured three accounts, gmail, outlook and breezelineohio and view mails in the unified inbox folder. This morning I started getting a “Certificate Error – Check your server settings” on my Android phone and tablet. I am unable to get mail sent to my breezelineohio account. Mail to gmail and outlook are working correctly. Also, the thunderbird windows 11 app is receiving mail sent to my breezelineohio account correctly. I only have a problem on the android phone and tablet.

The following is a chat I had with ChatGPT concerning this problem. I have italicized ChatGPT responses.

ME: I'm getting a message on my Android tablet that states that my email client Thunderbird has requested a certificate. It says that agreeing to this request will allow the application to use the certificate with service from now on. Is this something I should be worried about? Is it a scam?

ChatGPT: This is not necessarily a scam, but I recommend that you do not approve the certificate request until we determine why Thunderbird is asking for it.

The message you're seeing on your Android tablet sounds like a legitimate Android security notification.

What does the message mean? When Thunderbird requests a certificate, Android may display a message similar to:

Thunderbird has requested a certificate. Agreeing to this request will allow the application to use the certificate with this service from now on.

This usually means Thunderbird is asking permission to use a digital certificate stored on your tablet.

Digital certificates can be used to:

Verify your identity when connecting to certain email servers.

Authenticate a secure connection to an email service.

Access email services that require client certificates.

However, most ordinary personal email accounts do not require a client certificate.

What should you do? Do not tap Allow or OK yet.

If there's a Cancel button, select it for now.

Do not install any new certificates or enter passwords in response to an unexpected prompt.

Check whether Thunderbird continues to send and receive email normally.

If this is Android's genuine certificate-selection dialog, it is not itself evidence of a scam. However, an unexpected certificate request deserves investigation.

Thunderbird has been known to display certificate requests when an email server asks for certificate-based authentication, even when the user normally signs in with a password.

I have two questions Are you using your Breezeline email account with Thunderbird on your Android tablet, or a different email account?

Does the certificate message show a server name or email address? If so, what does it say?

You can also send me a screenshot of the message.

With that information, I can help determine whether this is a normal Thunderbird security request, a configuration problem, or something suspicious—and whether you should allow or deny it.

ME: I am using my Breezeline email account with Thunderbird on my Android tablet, and the certificate message does show my email address and server name.

ChatGPT: Thank you. That helps narrow down the problem.

Since you're using Thunderbird on your Android tablet with your Breezeline email account, and the certificate request displays your email address and a server name, this may be a legitimate Android security request rather than a scam.

However, I recommend that you do not approve the certificate request just yet.

Thunderbird normally connects to Breezeline using your email credentials and an encrypted connection. It generally should not need a personal client certificate.

One thing I'd like you to check What is the exact server name displayed in the certificate message?

For example, it might look something like mail.example.com.

Please type the server name exactly as it appears. You do not need to provide your full email address.

Once I know the server name, I can help determine whether the request is associated with Breezeline's email service and whether it is safe to approve.

ME: mail.breezelineohio.net And also the mail from the Breezeline does appear to be working properly.

ChatGPT: That's good news! Since your Breezeline email is sending and receiving messages properly in Thunderbird on your Android tablet, I would not approve the certificate request at this time.

The server name you provided, mail.breezelineohio.net, is consistent with your Breezeline email domain.

My recommendation When the certificate request appears, tap Cancel rather than Allow.

Continue using Thunderbird normally.

If your email continues working, there is no immediate reason to approve the request.

Do not delete your email account or change its settings.

I do not see an immediate reason to suspect a scam based on what you've described. However, a matching server name alone doesn't prove that a certificate request is trustworthy.

I verified Breezeline's official settings Breezeline confirms the following configuration:

Setting

Correct value

Incoming server

mail.breezelineohio.net

Incoming port

993

Outgoing server

mail.breezelineohio.net

Outgoing port

465

Security

SSL/TLS

Authentication

Normal password

These settings do not normally require a personal client certificate.

One final question: Does the certificate message appear every time you open Thunderbird, or does it appear only occasionally?

That will help me determine whether we should investigate a Thunderbird setting or simply dismiss the request.

ME: I just started getting this message when I start up both my phone and my tablet. The message reads, Certificate Error, Check your server settings. It just started today on the tablet and the phone. Since both your Android phone and tablet started displaying the same Thunderbird certificate error today, November 8, 2026, that is an important clue.

ChatGPT: I suspect the problem may be with Breezeline's email server certificate rather than either of your Android devices.

Here's why:

Thunderbird was previously working on both devices.

Both devices began reporting certificate errors on the same day.

Both connect to mail.breezelineohio.net.

You haven't reported making changes to either device.

A server certificate may have expired, been replaced, or developed a configuration problem. Thunderbird checks these certificates to ensure it is connecting securely.

For now, do not approve an unfamiliar certificate or accept a security exception. Also, don't uninstall Thunderbird or delete your Breezeline accounts.

What I found I checked for reports of Breezeline problems today. I could not confirm a widespread Breezeline email certificate problem.

I also verified that Breezeline still lists mail.breezelineohio.net as its official Thunderbird mail server.

Breezeline

What I suggest next Because the problem appeared simultaneously on both devices, I would first wait to see whether Breezeline corrects a possible server-side issue.

If the error continues, contact Breezeline and ask whether the SSL/TLS certificate for mail.breezelineohio.net has recently changed or expired.

One important question When you dismiss the certificate error, can you still receive NEW Breezeline email messages in Thunderbird on both your phone and tablet?

I'm asking specifically about new messages, not messages already stored in Thunderbird.

Your answer will help determine whether the certificate error is preventing Thunderbird from connecting to Breezeline's server.

ME: I went to Gmail.com on my Windows 11 PC browser and sent a test email message to my Breezeline account. I went to Breezeline on the PC and the message did show up in the Breezeline browser email. However, the message did not show up on either the tablet or the phone. It did show up in the Thunderbird email client on the PC.

ChatGPT: Your test tells us quite a bit. Breezeline is receiving your email correctly, but Thunderbird on your Android phone and tablet is having trouble connecting to the Breezeline mail server.

Here's what your test established:

Email application

Result

Gmail on Windows 11

Test message sent successfully

Breezeline Webmail on PC

Message received

Thunderbird on Windows 11

Message received

Thunderbird on Android tablet

Message not received

Thunderbird on Android phone

Message not received

What I think is happening Because Thunderbird on your Windows 11 PC works, but Thunderbird on both Android devices stopped working on the same day, I suspect one of the following:

An SSL/TLS certificate compatibility problem affecting Thunderbird for Android.

A certificate change on Breezeline's mail server that Android is rejecting.

A Thunderbird for Android issue involving certificate validation.

This does not look like a typical email scam. It looks more like a technical connection problem.

What I recommend Do not delete or reinstall Thunderbird on either Android device yet. We should first identify exactly why Android is rejecting the certificate.

Let's start with your tablet.

Open Thunderbird on your Android tablet.

When the message "Certificate Error — Check your server settings" appears, look for a button labeled Details, More information, or something similar.

If you see one, open it.

Look for wording such as:

Certificate expired

Certificate not trusted

Hostname mismatch

Unable to verify certificate

My next question When the certificate error appears on your Android tablet, does it give you a Details button, or does it simply display "Certificate Error — Check your server settings" with an OK button?

Once I know that, I'll walk you through the next step. I would prefer to correct the problem without disturbing your existing Thunderbird email accounts.

At this point I terminated the chat. I still have the problem but I can check mail to my breezelineohio account on the Windows 11 Thunderbird app. Any thoughts?

Subject: Built-in 50 GB VPN missing on Firefox for Android

Hello Mozilla Support Team,

The built-in free 50 GB VPN feature is missing from Firefox for Android on my Samsung device.

Another user in Iran, using the same Firefox version and an Iranian internet connection, has this feature available.

I have already tried:

- Reinstalling the latest Firefox from Google Play - Installing the exact APK from the other user's device - Signing in with my Mozilla account - Enabling Remote Improvements - Clearing the application cache - Testing with German and Dutch IP addresses - Installing Firefox Nightly

None of these steps made the VPN option appear.

Could you please investigate whether my account or device is excluded from the VPN rollout and advise how to enable this feature?

Thank you.

I am very concerned that the updated firefox is not responding to my Dashlane app for all my passwords??? So, I am not able to fill in my password and email plus my most important tabs are missing What is going on??? Very frustrating It would be great if a HUMAN would call to resolve this dilemna- [redacted phone# from community support forum] not AI

Yesterday while using Thunderbird on Samsung android phone the contents of my inbox completely disappeared. I searched Thunderbird's other folders such as Trash, Spam & Archive et al to no avail. This is disasterous for me. I see from a Goggle search that this is not uncommon.

Thunderbird - Why Does the Dark theme have black writing on a black background?

I have eye issues so a glaring white background is difficult for me but the theme I used to use the dark mixed system one (or dark one) has black writing when I try to look at details in my 'Tasks' and calendar details, why is this?

Firefox 153.6.0esr (64bit)

Tooltips show white text against white backgrounds, and are unreadable. Have tried with all extensions disabled, but still not readable.

Website Appearance set to "System"

 - have also tried "Dark"; tooltips show black against a black backgrould

Website Contrast set to "Automatic"

- have tried "Off" with no change

What do I need to do to

I have a Samsung Galaxy S 22 Ultra and your VPN worked great until the last update. When the VPN is on, non of my apps work. I get no internet errors. What is the use of having a VPN if it blocks you from getting on the internet? I'm really not feeling interested in renewing.

Following a Thunderbird update (I think it was 2 updates ago) it changed the behaviour of the description field in the new events window. I use thunderbird in a dark screen mode, and everything works perfectly, except when I try to type something into that description window. I'm now tying black (intead of white) on an almost black background. It's virtually impossible to see anything I'm trying to type. All the other fields are typing fine, white on black. If I open an entry on my calander now, it's fine, apart from that description field, which is also displaying text as black on black. It's also the same if I reopen the entry for editing. I had hoped the next update was going to correct this anomally, but it didn't. Is anyone aware of / reported this issue? Will it be fixed in the next update? Thank you for looking at this. Oh, nearly forgot, when I highlight the black on black text by clicking and dragging (prep for cut / copy & paste) the black text actually shows up as white text on a blue background whilst the field is 'live' moving onto something else, the text remains withe on a grey background. Hope this helps.

The option "Edit as New Message" is only available when a user right-clicks on the body of an email.

The option is not available in the menu displayed from the "More" button on an email. The option is also not available in the right-click menu on an email in a mailbox list. The option is only available in the right-click menu from the body of an email.

Requiring a user to use the right-click option in a specific area of the user interface is an accessibility issue which should be fixed.

Hi

I am from Iran and I would like to buy a VPN subscription from you but I have a questions:

In Iran there is a blocking system called DPI and the government can drop the international internet and only domestic net. At this time does your VPN work?

Many VPN sellers use Iran serves and foreign servers at the same time and do a reverse tunnel so in this way you will connect to Iran VPS but your IP is always the foreign IP with full international internet . Do you have the same methodology in your VPN systems ?

Thanks

Best regards, Peyman

After 158.0.1 update the colors are broken when I open a calendar event (in a popup or tab) in edit mode the description has dark background with black font which is very hard to read. I have Dark Mode in windows and this issue is in both Auto and Dark themes in Thunderbird. No matter what theme I install apart from Light the description in unreadable.

I couldn't find the built-in VPN options on my android mozzila. I tried opening it from the Google play event tab, and it does led me to it but I couldn't interact with anything in that. Does anyone have a solution?

A previous answer to the question "how do I enlarge the font" in an email message?" suggested clicking on "View" and then on "Font Size". No such options are available to me in Ubuntu. What can I do?

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Hi, I was referred here not too long ago to ask this. I use a BrailleNote Touch to browse sometimes and I was looking for something lightweight since Google Chrome decided to let my device blow up with all the ads. Thankfully Firefox works well; only issue is that I've been unable to efficiently jump to specific heading levels. Here's what usually happens on Chrome and other forks of it: My BrailleNote has six main keys to type. Headings have six levels, so it makes sense for me to use dot 2 to jump to heading level 2. Issue is, on Firefox and other forks (such as Waterfox), this doesn't seem to work. The tell-tale sign? "Heading level 2" instead of "Heading 2". Likely the browser just doesn't know how to render the headings on this device; annoying, yes, but not too bad. (I just find it less efficient.) Also also unrelated side note but my BrailleNote doesn't seem to render the switches correctly either. It can, however, recognize checkboxes and radio buttons. Just a thought, feel free to do what you will with it.

Have purchased this product, working on my devices, problem is with my wife's. instructed to use my log in on her device's which I did and used password, then her iOS asked her to sign in with her apple password, that's when the wheels fall off.

Regards Martin