Check Account Settings > Outgoing Server (SMTP) to make sure something is installed in there. When you set up the account, that should have been filled in if you used the correct information in the setup to begin with, but check just to make sure.

I have been using Thunderbird for more than a yer now. This problem only started after the recent update. The SMTP settings seem to be OK. Also, I have thunderbird installed on my PC which seems to be working fine.

Also, I have two accounts on thunderbird and both accounts have the same problem and it started simultaneously. In the meantime I am able to receive emails without any problem.

If this is a problem with the latest update.. how to I go back to the old version. My current version in 31.3.0

• http://kb.mozillazine.org/Cannot_send_mail
• https://support.mozilla.org/en-US/kb/cannot-send-messages

You can get any version of Tbird from here:

• https://ftp.mozilla.org/pub/mozilla.org/thunderbird/releases/

Hi finitarry,

I appreciate your prompt response to my posts..

I have tried everything thats mentioned on : http://kb.mozillazine.org/Cannot_send_mail .

Nothing worked and I am unable to downgrade the Thunderbird version without uninstalling the current one.

Another observation was that I am able to reply to emails that I get in my inbox. So if I press "send" when replying to an email, it behaves normally. But, it when it comes to new composed emails, it does nothing when I press " send".

Is there a link or a portal where I can report this to the developers??

Thanks..

right click your account in the folder pane and select settings.

Is there an SMTP server set in the dropdown list on the bottom right? IS it the correct one?

Hi Matt,

Yes, I checked this and SMTP server is already defined. In my case since its Gmail, the SMTP server is smtp.gmail.com

As i have posted in my last message, the problem seems to be only with newly composed mails or instances where I change the recipient address. When I am replying to an email as it is, there is no problem at all. Something tells me this has to do something with the software coding itself.

This problem has started when I updated from version 31.2 to 31.3.

Thanks..

In continuation to my last post..

I also took backup of my Thunderbird with Mozbackup and uninstalled the software.

On re-installing, all my accounts came back without having to restore and the problem still persists.

Do I have to manually delete any records from C: for a complete un-install of thunderbird?

I don't know quite why you think you must uninstall the software. A re-installation merely overwrites the previous installation. I don't know what would force or prompt you to uninstall.

Errors like yours are often, if not usually, related to settings, and your settings are stored separately from the program itself, in its profile. This why re-installation of the software is usually ineffectual in fixing problems. And why all your "accounts came back without having to restore".

Please post your settings here.

1. In Thunderbird, Help|Troubleshooting Information
2. Clear the "include account names" checkbox
3. Click the "copy text to clipboard" button
4. In your next post paste - use ctrl+v or right-click|paste.

If you really want a clean start, then remove, rename or otherwise hide your current profile and start again. Or use the profile manager command line argument to start Thunderbird with its profile manager, which offers an option to create a new profile (and revert to the old later.)

https://support.mozilla.org/en-US/kb/using-multiple-profiles

Hi Zenos,

Thank you for your post..

As requested please find attached the troubleshooting information below. Please let me know if you need more information from my end.

Another observation that I made today was I am also able to send messages composed by clicking on email addresses on web pages or received emails. For newly composed emails...still no luck!!

Application Basics

   Name: Thunderbird
   Version: 31.3.0
   User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0
   Profile Folder: Show Folder

             (Local drive)
   Application Build ID: 20141127140543
   Enabled Plugins: about:plugins
   Build Configuration: about:buildconfig
   Memory Use: about:memory

 Mail and News Accounts
   account1:
     INCOMING: account1, , (imap) imap.gmail.com:993, SSL, passwordCleartext
     OUTGOING: smtp.gmail.com:465, SSL, passwordCleartext, true

   account2:
     INCOMING: account2, , (none) Local Folders, plain, passwordCleartext

   account3:
     INCOMING: account3, , (imap) imap.gmail.com:993, SSL, passwordCleartext
     OUTGOING: smtp.gmail.com:465, SSL, passwordCleartext, true
     OUTGOING: smtp.gmail.com:465, SSL, passwordCleartext, false

 Crash Reports

 Extensions
   Allow HTML Temp, 3.6.4, true, {532269cf-a10e-4396-8613-b5d9a9a516d4}
   Check and Send, 0.9.27, true, {1B0ADFEC-846C-401D-BA54-7842CBD485D4}
   Contact Tabs, 2.0.12, true, [email protected]
   Lightning, 3.3.1, true, {e2fda1a4-762b-4020-b5ad-a41df1933103}
   Lightning Month Tabs, 1.9, true, [email protected]
   Mail Merge, 3.9.1, true, [email protected]
   MinimizeToTray revived (MinTrayR), 1.1.2, true, [email protected]
   Extra Folder Columns, 1.1.5, false, extra-cols@jminta_gmail.com
   GlassMyBird, 1.0.6, false, GlassMyBird@ArisT2_Noia4dev

 Important Modified Preferences

   Name: Value

     accessibility.typeaheadfind.flashBar: 0
     browser.cache.disk.capacity: 358400
     browser.cache.disk.smart_size.first_run: false
     browser.cache.disk.smart_size.use_old_max: false
     browser.cache.disk.smart_size_cached_value: 358400
     dom.max_chrome_script_run_time: 0
     extensions.lastAppVersion: 31.3.0
     font.internaluseonly.changed: true
     font.name.monospace.el: Consolas
     font.name.monospace.tr: Consolas
     font.name.monospace.x-baltic: Consolas
     font.name.monospace.x-central-euro: Consolas
     font.name.monospace.x-cyrillic: Consolas
     font.name.monospace.x-unicode: Consolas
     font.name.monospace.x-western: Consolas
     font.name.sans-serif.el: Calibri
     font.name.sans-serif.tr: Calibri
     font.name.sans-serif.x-baltic: Calibri
     font.name.sans-serif.x-central-euro: Calibri
     font.name.sans-serif.x-cyrillic: Calibri
     font.name.sans-serif.x-unicode: Calibri
     font.name.sans-serif.x-western: Calibri
     font.name.serif.el: Cambria
     font.name.serif.tr: Cambria
     font.name.serif.x-baltic: Cambria
     font.name.serif.x-central-euro: Cambria
     font.name.serif.x-cyrillic: Cambria
     font.name.serif.x-unicode: Cambria
     font.name.serif.x-western: Cambria
     font.size.fixed.el: 14
     font.size.fixed.tr: 14
     font.size.fixed.x-baltic: 14
     font.size.fixed.x-central-euro: 14
     font.size.fixed.x-cyrillic: 14
     font.size.fixed.x-unicode: 14
     font.size.fixed.x-western: 14
     font.size.variable.el: 17
     font.size.variable.tr: 17
     font.size.variable.x-baltic: 17
     font.size.variable.x-central-euro: 17
     font.size.variable.x-cyrillic: 17
     font.size.variable.x-unicode: 17
     font.size.variable.x-western: 12
     mail.openMessageBehavior.version: 1
     mail.winsearch.enable: true
     mail.winsearch.firstRunDone: true
     mail.winsearch.global_reindex_time: 1338112660
     mailnews.database.global.datastore.id: 86bb7127-6335-4e46-a6fe-c9ed64ab633
     mailnews.database.global.views.global.columns: {"threadCol":{"visible":true,"ordinal":"1"},"flaggedCol":{"visible":true,"ordinal":"3"},"attachmentCol":{"visible":false…
     network.cookie.prefsMigrated: true
     places.database.lastMaintenance: 1419481536
     places.history.expiration.transient_current_max_pages: 104858
     plugin.disable_full_page_plugin_for_types: application/pdf
     plugin.importedState: true
     plugins.update.notifyUser: true

 Graphics

     Adapter Description: NVIDIA Quadro FX 880M
     Vendor ID: 0x10de
     Device ID: 0x0a3c
     Adapter RAM: 1024
     Adapter Drivers: nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
     Driver Version: 8.16.11.8974
     Driver Date: 4-16-2010
     Direct2D Enabled: Blocked for your graphics driver version. Try updating your graphics driver to version 257.21 or newer.
     DirectWrite Enabled: false (6.2.9200.16571)
     ClearType Parameters: ClearType parameters not found
     WebGL Renderer: Blocked for your graphics driver version. Try updating your graphics driver to version 182.65 or newer.
     GPU Accelerated Windows: 0. Blocked for your graphics driver version. Try updating your graphics driver to version 182.65 or newer.

     AzureCanvasBackend: skia
     AzureSkiaAccelerated: 0
     AzureFallbackCanvasBackend: cairo
     AzureContentBackend: cairo

 JavaScript

 Incremental GC: 1

 Accessibility

   Activated: 0
   Prevent Accessibility: 0

 Library Versions

     Expected minimum version
     Version in use

     NSPR
     4.10.6
     4.10.6

     NSS
     3.16.2.3 Basic ECC
     3.16.2.3 Basic ECC

     NSS Util
     3.16.2.3
     3.16.2.3

     NSS SSL
     3.16.2.3 Basic ECC
     3.16.2.3 Basic ECC

     NSS S/MIME
     3.16.2.3 Basic ECC
     3.16.2.3 Basic ECC

I'm not familar with "Check and Send".

Have you tried running Thunderbird in its safe mode? This would tell us if an add-on is causing your troubles.

https://support.mozilla.org/en-US/kb/safe-mode

Hi Zenos,

"Check and Send" was indeed the problem. I disabled the add-on and my thunderbird went back to normal..

Really happy that my Thunderbird is back..

Thanks Zenos...Thanx a ton!!

For every1 who took time to post on this thread.. Thanks for all the help.

Merry Christmas and Happy New year to all of you!!