TB sends for a while then can't connect to Gmail server.
I am using Windows 10 and FireFox as a browser. I am hard wired into my router. I checked to make sure I had internet.
Thunderbird works great for a while then refuses to connect to the Gmail Server. I keep getting the following message. I was able to save the message.
I can't figure out why it is so random. Thanks Jan
Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtp.gmail.com failed. The server may be unavailable or is refusing Outgoing server (SMTP) connections. Please verify that your Outgoing server (SMTP) settings are correct and try again.
Alle antwurden (5)
Please post your Troubleshooting Information.
At the top right of the Thunderbird window, click the menu button 
, then select Help > Troubleshooting Information.
Press the Copy text to clipboard button and paste the information into your reply.
Troubleshooting information, Thanks christ1
Application Basics
Name: Thunderbird Version: 38.4.0 User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 Profile Folder: Show Folder
(Local drive) Application Build ID: 20151119061742 Enabled Plugins: about:plugins Build Configuration: about:buildconfig Memory Use: about:memory
Mail and News Accounts
account2:
INCOMING: account2, , (none) Local Folders, plain, passwordCleartext
account4:
INCOMING: account4, , (imap) imap.gmail.com:993, SSL, OAuth2
OUTGOING: smtp.gmail.com:465, SSL, OAuth2, true
Crash Reports
Extensions
gContactSync, 2.0.9, true, gContactSync@pirules.net
Lightning, 4.0.4.1, true, {e2fda1a4-762b-4020-b5ad-a41df1933103}
Signature Switch, 1.6.13, true, {2ab1b709-ba03-4361-abf9-c50b964ff75d}
Important Modified Preferences
Name: Value
browser.cache.disk.capacity: 358400
browser.cache.disk.smart_size_cached_value: 358400
browser.cache.disk.smart_size.first_run: false
browser.cache.disk.smart_size.use_old_max: false
extensions.lastAppVersion: 38.4.0
font.name.monospace.el: 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.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.x-cyrillic: Cambria
font.name.serif.x-unicode: Cambria
font.name.serif.x-western: Cambria
font.size.fixed.el: 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.x-cyrillic: 17
font.size.variable.x-unicode: 17
font.size.variable.x-western: 17
mail.openMessageBehavior.version: 1
mail.winsearch.firstRunDone: true
mailnews.database.global.datastore.id: 4135362a-fa11-4776-b486-dad0698b037
network.cookie.prefsMigrated: true
network.predictor.cleaned-up: true
places.database.lastMaintenance: 1449855439
places.history.expiration.transient_current_max_pages: 104858
plugin.importedState: true
Graphics
Adapter Description: AMD Radeon(TM) HD 8510G
Vendor ID: 0x1002
Device ID: 0x9999
Adapter RAM: 768
Adapter Drivers: aticfx64 aticfx64 aticfx64 amdxc64 aticfx32 aticfx32 aticfx32 amdxc32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64
Driver Version: 15.201.1101.0
Driver Date: 8-6-2015
Direct2D Enabled: false
DirectWrite Enabled: false (10.0.10240.16430)
ClearType Parameters: ClearType parameters not found
WebGL Renderer: false
GPU Accelerated Windows: 0
AzureCanvasBackend: skia
AzureSkiaAccelerated: 0
AzureFallbackCanvasBackend: cairo
AzureContentBackend: cairo
JavaScript
Incremental GC: 1
Accessibility
Activated: 1 Prevent Accessibility: 0
Library Versions
Expected minimum version
Version in use
NSPR
4.10.10
4.10.10
NSS
3.19.2.1 Basic ECC
3.19.2.1 Basic ECC
NSS Util
3.19.2.1
3.19.2.1
NSS SSL
3.19.2.1 Basic ECC
3.19.2.1 Basic ECC
NSS S/MIME
3.19.2.1 Basic ECC
3.19.2.1 Basic ECC
Your server settings look good.
Try to start *Windows* in safe mode with networking enabled. - Win10 http://windows.microsoft.com/en-us/windows-10/change-startup-settings-in-windows-10#v1h=tab01
Still in Windows safe mode, start Thunderbird in safe mode. - https://support.mozilla.org/en-US/kb/safe-mode
Does the problem go away?
I went into TB safe mode (not Windows) and that seemed to fix the problem. Will I have to do that every time I restart Thunderbird?
I went into TB safe mode (not Windows) and that seemed to fix the problem.
Does it 'seemed to fix the problem', or does it fix the problem? Please also try Windows in safe mode.
What is your anti-virus software?
Will I have to do that every time I restart Thunderbird?
No, this is for troubleshooting only.