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

As the bottom on the list in account setting select outgoing server (SMTP). Do you have an outgoing server set for gmail? If not you need one.

Now click on the primary account name above outgoing server (SMTP). Is the correct SMTP server for the account set (Gmail server for gmail account.)

I think you may have misunderstood my problem. My Server SMPT is Eircom.net not gmail. Please find another popup that appears.

Regards,

Louis

Please add the troubleshooting information to your post To find the Troubleshooting information:

• Open Help (or click on three-line-icon and select Help)
• Choose Troubleshooting Information
• Use the button Copy to clipboard to select all. Do not check box "Include account names"!
• Paste this in your post.

Please also add the result of these troubleshooting steps to your post

• Does Thunderbird work in TB Safe mode (see Thunderbird Safe Mode)?
• Do you use anti-virus and firewall software? What is the version?

Matt,

Please find below a copy of the Toubleshooting information. Thunderbird Safe Mode is the same. My Virus is AVG Version 17.9.3040. I tried switching off the AVG protection but there was no change in Thunderbird.

Thanks for your help it is much appreciated. Louis,

 Application Basics

   Name: Thunderbird
   Version: 52.5.2
   User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2
   Profile Folder: Open Folder

             (Local drive)
   Application Build ID: 20171221110448
   Enabled Plugins: about:plugins
   Build Configuration: about:buildconfig
   Memory Use: about:memory
   Profiles: about:profiles

 Mail and News Accounts
   account1:
     INCOMING: account1, , (pop3) pop.eircom.net:110, plain, passwordCleartext
     OUTGOING: , smtp.eircom.net:25, alwaysSTARTTLS, passwordCleartext, true

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

 Crash Reports

 Extensions
   Lightning, 5.4.5.2, true, {e2fda1a4-762b-4020-b5ad-a41df1933103}

 Important Modified Preferences

   Name: Value

     accessibility.lastLoadDate: 1515673052
     browser.cache.disk.capacity: 358400
     browser.cache.disk.filesystem_reported: 1
     extensions.lastAppVersion: 52.5.2
     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: f87282d3-a7d2-4d70-b7df-03b5389f1d8
     media.gmp.storage.version.observed: 1
     network.cookie.prefsMigrated: true
     network.predictor.cleaned-up: true
     places.database.lastMaintenance: 1515498459
     places.history.expiration.transient_current_max_pages: 122334
     security.sandbox.content.tempDirSuffix: {5a1b425f-3b85-4461-b28b-a5f7b110dd03}

 Graphics

     GPU #1
     Description: NVIDIA GeForce GTX 770
     Vendor ID: 0x10de
     Device ID: 0x1184
     RAM: 2048
     Drivers: C:\WINDOWS\System32\DriverStore\FileRepository\nv_ref_pubwu.inf_amd64_2e7fa54192fe16d0\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_ref_pubwu.inf_amd64_2e7fa54192fe16d0\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_ref_pubwu.inf_amd64_2e7fa54192fe16d0\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_ref_pubwu.inf_amd64_2e7fa54192fe16d0\nvldumdx.dll C:\WINDOWS\System32\DriverStore\FileRepository\nv_ref_pubwu.inf_amd64_2e7fa54192fe16d0\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_ref_pubwu.inf_amd64_2e7fa54192fe16d0\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_ref_pubwu.inf_amd64_2e7fa54192fe16d0\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_ref_pubwu.inf_amd64_2e7fa54192fe16d0\nvldumd.dll
     Driver Version: 23.21.13.8813
     Driver Date: 10-27-2017

     Features
     Direct2D: false
     DirectWrite: true (10.0.16299.15)
     WebGL Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 770 Direct3D9Ex vs_3_0 ps_3_0) -- OpenGL ES 2.0 (ANGLE 2.1.0.2a250c8a0e15)

     AzureCanvasBackend: skia
     AzureCanvasAccelerated: 0
     AzureFallbackCanvasBackend: cairo
     AzureContentBackend: skia

 JavaScript

 Incremental GC: 1

 Accessibility

   Activated: 0
   Prevent Accessibility: 0

 Library Versions

     Expected minimum version
     Version in use

     NSPR
     4.13.1
     4.13.1

     NSS
     3.28.6
     3.28.6

     NSS Util
     3.28.6
     3.28.6

     NSS SSL
     3.28.6
     3.28.6

     NSS S/MIME
     3.28.6
     3.28.6

It's hard to make any sense of that first error message. On the face of it, it's complaining that you're trying to send using a gmail address via the eircom server, and it's (predicatably) refusing to do this. But there is no sign in your account settings of any gmail account to account (ahem!) for this.

When I try to send an email other than my provider (eircom.net)

Is there a word or two missing there? ;-)

Do you have any other identities set up on the eircom account?

Have you tried to "view" the certificate that's being refused? If it says something that doesn't tally with eircom's server settings, eircom need to know about it.

Maybe I should start from the beginning. Just after Christmas Windows 10 suggested that I needed to refresh. I never heard of this before and was not aware of the consequences (Vandalism if you ask me) I was not in the best of health so I hit the refresh button. I basically wiped my Desktop taking with it most of my applications along with Thunderbird and Firefox. Lost all of my emails and bookmarks going back some years. As Thunderbird and Firefox were installed on my C drive which is Solid State I believe recovery of these were impossible.

I've reinstalled Thunderbird and I can receive emails from any source but I only appear to be able to send emails to eircom.net addresses but no other sources (gmail or yahoo etc.).

I have no idea if I have other identities set up but I shouldn't think so as it's a new clean install.

I have no idea of eircom settings as I just connected. I've installed before when I got a new PC and everything setup automatically but that was some time ago and I don't recall any issue.

Regards, Louis

re: ....... I basically wiped my Desktop taking with it most of my applications along with Thunderbird and Firefox. Lost all of my emails and bookmarks going back some years. As Thunderbird and Firefox were installed on my C drive which is Solid State I believe recovery of these were impossible.

All you old profile information would have been placed in a 'windows.old' folder. Allowing you to copy paste them back int corect locations after reinstalling programs such as Thunderbird. The 'windows.old' folder is auto deleted after 28 days. Info is available by a simple google search. https://support.microsoft.com/en-gb/help/17125/windows-8-restore-files-old-folder-upgrade

RE: Outgoing Server settings

I've been doing a search for pop and eircom.net; they are not exactly forthcoming with information. It would seem that the outgoing smtp server settings are: outgoing server: mail1.eircom.net I cannot locate any mention of the one you are using: smtp.eircom.net, so it may be a very old setting which they have updated.

port 25

Some reports say: Connection Security: None Others say : SSL/TLS No one mentions what you are using: STARTTLS

Authentication : Normal Password.

Please access your Account Settings and Edit the outgoing smtp server settings. Right click on mail account and select 'Settings' bottom left pane, select 'Outgoing Server (SMTP) a list of outgoing servers will be listed - one for mail account. Select the outgoing server and click on 'Edit' Change the outgoing server name to say: mail1.eircom.net Set Connection Security to none Make sure Authentication is Normal Password. Make sure user name is full email address. clickon all the OK's.

Exit and restart Thunderbird.

Try to send email to the gmail address. Enter password if requested and select checkbox for pasword manager to remember password.

Please report back on results.

As an aside, is the SSD the only drive in this machine? Does it also have a HDD?

If you do have SSD and HDD, I'd recommend you set up your Thunderbird profile on the HDD, to avoid it gobbling up all the precious SSD capacity. And move all your own data files to the HDD too.

Unfortunately, Microsoft don't make this very easy. You have to manually set, one by one, all the folders (Documents, Pictures, Music, Videos etc) that you want to move to their new location, then create a suitable location for Thunderbird since Windows offers no easy way to migrate the AppData folder. :-(

Don't try to move the whole Users folder; doing this breaks future upgrades.

If you can do all this, then you will have isolated your own data and settings, and can do Windows refreshes in the future knowing that your data is not going to be touched.

If all you have is the SSD (or indeed, just one HDD) then it's worth considering adding a data partition for yourself, again giving you isolation from where the OS lives.

Yes I was going to look into this for the future. Is it possible to install Thunderbird and Firefox directly to a HDD to keep it off C drive?

incidently I think I have it down to outgoing server password and I just realised my outgoing server is not Eircom but Virgin Media labled STMP.upcmail.ie. unfortunatly I can only find an eircom password. Louis

Where do you see that mention of "STMP.upcmail.ie"? Your settings don't show this. Unless somehow you're showing us some obsolete and presumably unused settings…

BTW, I'm pretty sure it will be smtp, not stmp. The letters stand for "simple mail transfer protocol".