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Incorrect error message stops me sending emails

Posted

This isn't the first time I've asked for help with this and nobody seams to know the answer.

I've just tried to send the same message to 8 different recipients and got this ridiculous error message yet again and can't send any emails at all. I knocked off the email address that it said was unavailable and tried again, same error, then did the same again for each recipient and got the same error. Now I know for certain that the email address's are correct, that their mail boxes are not full and are available. I've had this happen on numerous occasions in the past it's so annoying and unless someone can help and soon I'm dumping Thunderbird altogether.

This isn't the first time I've asked for help with this and nobody seams to know the answer. I've just tried to send the same message to 8 different recipients and got this ridiculous error message yet again and can't send any emails at all. I knocked off the email address that it said was unavailable and tried again, same error, then did the same again for each recipient and got the same error. Now I know for certain that the email address's are correct, that their mail boxes are not full and are available. I've had this happen on numerous occasions in the past it's so annoying and unless someone can help and soon I'm dumping Thunderbird altogether.
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christ1
  • Top 25 Contributor
2177 solutions 15957 answers

The error message is from your email provider's server. You should talk to them.

The error message is from your email provider's server. You should talk to them.
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Question owner

I had TalkTalk as my internet provider together with a Talktalk email address and with Thunderbird as my mail client and I had the same error message back then. Now Plusnet is my internet provider and mail.com is my email client yet I still get the same error message. So please explain what I'm supposed to do

I had TalkTalk as my internet provider together with a Talktalk email address and with Thunderbird as my mail client and I had the same error message back then. Now Plusnet is my internet provider and mail.com is my email client yet I still get the same error message. So please explain what I'm supposed to do
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AgnesRM
  • Top 25 Contributor
23 solutions 184 answers

Oh dear - it's hard to know which is worse - TalkTalk or Plusnet. https://www.lovemoney.com/news/12418/uks-worst-broadband-provider-talktalk-plusnet-bt Based on that., talking to them may not help much, but at least you are not alone in having complaints.

There is a simple test that would eliminate Thunderbird from your email problems. Simply use Plusnet webmail - send your message direct from the Plusnet system, instead of through Thunderbird. https://www.plus.net/help/email-guides/how-to-use-webmail/ If you get the same kind of error, then that proves Thunderbird is not the problem. If you successfully send from the Plusnet site, to the same addresses that do not work using Thunderbird, then drop Thunderbird.

Best wishes, Agnes

Oh dear - it's hard to know which is worse - TalkTalk or Plusnet. https://www.lovemoney.com/news/12418/uks-worst-broadband-provider-talktalk-plusnet-bt Based on that., talking to them may not help much, but at least you are not alone in having complaints. There is a simple test that would eliminate Thunderbird from your email problems. Simply use Plusnet webmail - send your message direct from the Plusnet system, instead of through Thunderbird. https://www.plus.net/help/email-guides/how-to-use-webmail/ If you get the same kind of error, then that proves Thunderbird is not the problem. If you successfully send from the Plusnet site, to the same addresses that do not work using Thunderbird, then drop Thunderbird. Best wishes, Agnes
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Question owner

First thing tried Thunderbird again same error. Next sent emails from mail.com web mail and it worked. Some time later tried again with Thunderbird, this time no error message and emails sent. Reluctant to dump Thunderbird because I like the simple interface but if we can't fix the problem I don't think I'll have much choice, I can't afford not to be able to send emails for 24/48 hours. Any more idea's?

First thing tried Thunderbird again same error. Next sent emails from mail.com web mail and it worked. Some time later tried again with Thunderbird, this time no error message and emails sent. Reluctant to dump Thunderbird because I like the simple interface but if we can't fix the problem I don't think I'll have much choice, I can't afford not to be able to send emails for 24/48 hours. Any more idea's?
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AgnesRM
  • Top 25 Contributor
23 solutions 184 answers

Hi As Christ1 says, the message Thunderbird is showing you, comes to Thunderbird from your email server - that is, from the mail.com computer. It says so in the error you showed us - that "the mail server responded" mailbox unavailable. In the case of a failed to deliver message, mail.com computer is telling you what it was told by the recipient's email server. Sometimes, as you mentioned, there really is a problem with a particular email address. Sometimes, if the mail.com computer is telling you it cannot find any of the addresses you want to send to, that might be a failure of one of the components of the network at mail.com, or at Plusnet. I hope that helps you to understand how these error messages work - and that there are multiple reasons for, and sources of, failure to deliver errors. This kind of error message is from outside Thunderbird - it just passed the message along to you, but it did not cause the problem. You proved yourself that messages sometimes work, sometimes don't. Intermittent problems with one or more of the links in the communication system are not uncommon, with any internet service. Here is a resource that may help you in future - it shows when Plusnet itself is having problems, and the comments give more detail from other users as to what's broken. Same for mail.com. https://downdetector.co.uk/status/plusnet/ https://downdetector.co.uk/status/mail-com/ Both these have to be operating well for your emails to work, as well as the services that your recipients are using.

I hope you can continue enjoying Thunderbird, and not assume Thunderbird is responsible for all the problems that can occur with getting an email message from you through the multiple other systems on the way to each recipient's account.

Best wishes, Agnes

Hi As Christ1 says, the message Thunderbird is showing you, comes to Thunderbird from your email server - that is, from the mail.com computer. It says so in the error you showed us - that "the mail server responded" mailbox unavailable. In the case of a failed to deliver message, mail.com computer is telling you what it was told by the recipient's email server. Sometimes, as you mentioned, there really is a problem with a particular email address. Sometimes, if the mail.com computer is telling you it cannot find any of the addresses you want to send to, that might be a failure of one of the components of the network at mail.com, or at Plusnet. I hope that helps you to understand how these error messages work - and that there are multiple reasons for, and sources of, failure to deliver errors. This kind of error message is from outside Thunderbird - it just passed the message along to you, but it did not cause the problem. You proved yourself that messages sometimes work, sometimes don't. Intermittent problems with one or more of the links in the communication system are not uncommon, with any internet service. Here is a resource that may help you in future - it shows when Plusnet itself is having problems, and the comments give more detail from other users as to what's broken. Same for mail.com. https://downdetector.co.uk/status/plusnet/ https://downdetector.co.uk/status/mail-com/ Both these have to be operating well for your emails to work, as well as the services that your recipients are using. I hope you can continue enjoying Thunderbird, and not assume Thunderbird is responsible for all the problems that can occur with getting an email message from you through the multiple other systems on the way to each recipient's account. Best wishes, Agnes
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Question owner

I'm sorry but you don't have a clue. I've had Thurnderbird for at least 5 years and this error message has come up many times in the past, yet I've had mail.com and plusnet for only ten days, so how the hell has that got to to do with either of them.?

I'm sorry but you don't have a clue. I've had Thurnderbird for at least 5 years and this error message has come up many times in the past, yet I've had mail.com and plusnet for only ten days, so how the hell has that got to to do with either of them.?
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AgnesRM
  • Top 25 Contributor
23 solutions 184 answers

If you need credentials, I have been using Thunderbird for a lot longer than that, on several email systems, and providing support for a staff team using Thunderbird, as well as researching and answering questions for the public. As I said, anyone using email, through all the different systems that have to connect to get a message from one sender to each recipient, may experience glitches. You have had errors before - with TalkTalk, and again now with Plusnet and Mail.com. All those systems have to be set up exactly right to talk to each other reliably, and it is often very difficult to pinpoint the cause of an intermittent failure. You tend to blame Thunderbird without evidence - even when the error message you provided specifically says the error is coming from another server. Just because you used Thunderbird with different systems does not prove Thunderbird is causing the trouble. Thunderbird can only be as good as the settings it is given, as provided by your email service, and then connect reliably, dependent on the reliability of your internet service. You said nobody had answered this question for you before. I have done my best to explain it to you in layman's language. Agnes

If you need credentials, I have been using Thunderbird for a lot longer than that, on several email systems, and providing support for a staff team using Thunderbird, as well as researching and answering questions for the public. As I said, anyone using email, through all the different systems that have to connect to get a message from one sender to each recipient, may experience glitches. You have had errors before - with TalkTalk, and again now with Plusnet and Mail.com. All those systems have to be set up exactly right to talk to each other reliably, and it is often very difficult to pinpoint the cause of an intermittent failure. You tend to blame Thunderbird without evidence - even when the error message you provided specifically says the error is coming from another server. Just because you used Thunderbird with different systems does not prove Thunderbird is causing the trouble. Thunderbird can only be as good as the settings it is given, as provided by your email service, and then connect reliably, dependent on the reliability of your internet service. You said nobody had answered this question for you before. I have done my best to explain it to you in layman's language. Agnes
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Question owner

Yet again you've avoided the issue and not given any indication of how to stop it happening, instead are trying to pass the buck onto Plusnet and Mail.com. Perhaps you should read my last message again, I've only had them for 10 DAYS, what happened for the past 5 years when I had exactly the same message a number of times, or was that someone else's fault as well. Never mind I'm just the numpty trying to get it fixed and obviously not very tech savvy so forget it.

Yet again you've avoided the issue and not given any indication of how to stop it happening, instead are trying to pass the buck onto Plusnet and Mail.com. Perhaps you should read my last message again, I've only had them for 10 DAYS, what happened for the past 5 years when I had exactly the same message a number of times, or was that someone else's fault as well. Never mind I'm just the numpty trying to get it fixed and obviously not very tech savvy so forget it.
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Toad-Hall
  • Top 10 Contributor
1811 solutions 12204 answers

Other identical questions: All three identical questions posted in the last 11 days. https://support.mozilla.org/en-US/questions/1272730 https://support.mozilla.org/en-US/questions/1273065

Info copied over in a more easily readible format: account3 (imap) imap.talktalk.net:143 plain passwordCleartext smtp.talktalk.net:587 plain password Cleartext true

account15 (imap) imap.talktalk.net:143 alwaysSTARTTLS passwordCleartext smtp.talktalk.net:587 alwaysSTARTTLS none true

account19 (imap) imap.mail.com:993 SSL password Cleartext smtp.mail.com:465 SSL passwordCleartext true

For account 19: Was advised to use smtp.mail.com: port 587, STARTTLS security, authentication = normal password, User Name = email address.

Antivirus Avast Antivirus Antispyware


Advise:

  • Start/boot up computer in 'Safe Mode with Networking' mode
  • Start Thunderbird.
  • Attempt to send.
  • Please test this and report on results.
Other identical questions: All three identical questions posted in the last 11 days. https://support.mozilla.org/en-US/questions/1272730 https://support.mozilla.org/en-US/questions/1273065 Info copied over in a more easily readible format: account3 (imap) imap.talktalk.net:143 plain passwordCleartext smtp.talktalk.net:587 plain password Cleartext true account15 (imap) imap.talktalk.net:143 alwaysSTARTTLS passwordCleartext smtp.talktalk.net:587 alwaysSTARTTLS none true account19 (imap) imap.mail.com:993 SSL password Cleartext smtp.mail.com:465 SSL passwordCleartext true For account 19: Was advised to use smtp.mail.com: port 587, STARTTLS security, authentication = normal password, User Name = email address. Antivirus Avast Antivirus Antispyware '''Advise:''' * Start/boot up computer in 'Safe Mode with Networking' mode * Start Thunderbird. * Attempt to send. * Please test this and report on results.
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Question owner

Sorry but only the first of links works, I click on the others and all I get is "This site is restricted"

Sorry but only the first of links works, I click on the others and all I get is "This site is restricted"
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Toad-Hall
  • Top 10 Contributor
1811 solutions 12204 answers

In this particular question, you mention you have now swapped your ISP from TalkTalk to Plusnet. When did this occur ?

In previous comment I copied all the server settings you had posted, but have the smtp for TalkTalk changed since you swapped to Plusnet ? Have you swapped the outgoing server setting?

If you are trying to send using a talktalk email address using a talktalk server and you do not use TalkTalk as ISP then that is the reason why the talktalk mailbox is not available.

Please read this information: https://www.plus.net/help/archive/email/email-switch/

Basically it says: If you've switched from another provider, chances are you may want to continue using your old email address. If your previous provider allows this (you'll need to ask them if you're not sure) and you use an email program to check your messages (such as Outlook, Windows Mail, Mac Mail or Thunderbird) then you'll need to make a small change to your settings. Otherwise you'll be able to receive new messages but you won't be able to send them. To fix this, change your outgoing server to relay.plus.net and if you're using authentication, switch that off.

So try this for all talktalk email address/mail accounts: Change the smtp info from: smtp.talktalk.net:587 alwaysSTARTTLS none true

To: Outgoing server name: relay.plus.net port: 25 or try 587 User name = email address Authentication method: No authentication Connection Security: none click on OK

Restart Thunderbird to ensure all new smtp info is being used.

In this particular question, you mention you have now swapped your ISP from TalkTalk to Plusnet. When did this occur ? In previous comment I copied all the server settings you had posted, but have the smtp for TalkTalk changed since you swapped to Plusnet ? Have you swapped the outgoing server setting? If you are trying to send using a talktalk email address using a talktalk server and you do not use TalkTalk as ISP then that is the reason why the talktalk mailbox is not available. Please read this information: https://www.plus.net/help/archive/email/email-switch/ Basically it says: ''If you've switched from another provider, chances are you may want to continue using your old email address.'' ''If your previous provider allows this (you'll need to ask them if you're not sure) and you use an email program to check your messages (such as Outlook, Windows Mail, Mac Mail or Thunderbird) then you'll need to make a small change to your settings. Otherwise you'll be able to receive new messages but you won't be able to send them.'' ''To fix this, change your outgoing server to '''relay.plus.net''' and if you're using authentication, switch that off.'' So try this for all talktalk email address/mail accounts: Change the smtp info from: smtp.talktalk.net:587 alwaysSTARTTLS none true To: Outgoing server name: relay.plus.net port: 25 or try 587 User name = email address Authentication method: No authentication Connection Security: none click on OK Restart Thunderbird to ensure all new smtp info is being used.
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Question owner

Thanks for the help but I got rid of my Talktalk a few day's ago so I just have Mail.com

Thanks for the help but I got rid of my Talktalk a few day's ago so I just have Mail.com
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Matt
  • Top 10 Contributor
  • Moderator
3293 solutions 22756 answers

It is time for you to post your troubleshooting information again. This time just copy and paste it. putting it into whatever program you did last time simply messed up the formatting and made it almost impossible to read.

Basically you have avast, a known troublesome anti virus product and your settings are basically unknown as you keep changing what you say.

I also suggest you stick to this topic this time. I will delete any further duplicates, not lock them. You wasted a lot of peoples time in your previous topics and got nowhere because you insist the issue is in Thunderbird.

It is time for you to post your troubleshooting information again. This time just copy and paste it. putting it into whatever program you did last time simply messed up the formatting and made it almost impossible to read. Basically you have avast, a known troublesome anti virus product and your settings are basically unknown as you keep changing what you say. I also suggest you stick to this topic this time. I will delete any further duplicates, not lock them. You wasted a lot of peoples time in your previous topics and got nowhere because you insist the issue is in Thunderbird.
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Question owner

Up yours to

Up yours to
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Toad-Hall
  • Top 10 Contributor
1811 solutions 12204 answers

Bellante I did not appreciate getting an email with that comment. When you post a comment it goes out to everyone who is following this question.

It really would be helpful if you reposted your current troubleshooting information. I had no idea you had removed TalkTalk. In a previous comment I asked you to check something and report back with results, but I do not think you have done it as yet. Please do this:

  • Start/boot up computer in 'Safe Mode with Networking' mode
  • Start Thunderbird.
  • Attempt to send.
  • Please test this and report on results.
Bellante I did not appreciate getting an email with that comment. When you post a comment it goes out to everyone who is following this question. It really would be helpful if you reposted your current troubleshooting information. I had no idea you had removed TalkTalk. In a previous comment I asked you to check something and report back with results, but I do not think you have done it as yet. Please do this: * Start/boot up computer in 'Safe Mode with Networking' mode * Start Thunderbird. * Attempt to send. * Please test this and report on results.
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