Outgoing server (SMTP) mail.cphart.co.uk using STARTTLS problem (Mac)
I had a few problems a week ago when thunderbird updated to 45.1.0, but sorted those problems out and everything was working smoothly. Then all of a sudden yesterday afternoon i get the following error message when sending emails:
Sending of the message failed. An error occurred while sending mail: Unable to establish a secure link with Outgoing server (SMTP) mail.cphart.co.uk using STARTTLS since it doesn't advertise that feature. Switch off STARTTLS for that server or contact your service provider.
I've spoken to my IT dept who can seem to solve the issue, I've read some sort of virus scanning software can cause the problem. I've tried different ports for smtp but all with no luck. I'm running thunderbird via a mac running 10.6.8.
I've also can telnet to my mail server, so my IT dept are saying Thunderbird is to blame for this error.
Can anyone help me with this STARTTLS problem error?
All Replies (16)
Ask your IT department what the server supports.
- no encryption? port?
- STARTTLS? port?
- SSL/TLS? port?
What anti-virus software are you using, and does it intercept your secure communication with the server?
SMTP is on port 587
Connection security: STARTTLS Auth Method: NTLM
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.
Copy text below:
Application Basics
Name: Thunderbird Version: 45.1.0 User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:45.0) Gecko/20100101 Thunderbird/45.1.0 Profile Folder: Show in Finder Application Build ID: 20160509110721 Enabled Plugins: about:plugins Build Configuration: about:buildconfig Memory Use: about:memory
Mail and News Accounts account2: INCOMING: account2, , (none) Local Folders, plain, passwordCleartext
account6: INCOMING: account6, , (imap) mail.cphart.co.uk:143, alwaysSTARTTLS, NTLM OUTGOING: , mail.cphart.co.uk:587, alwaysSTARTTLS, NTLM, true
Crash Reports
Extensions ExQuilla for Microsoft Exchange, 45.0.1161, true, exquilla@mesquilla.com Lightning, 4.7.1, true, {e2fda1a4-762b-4020-b5ad-a41df1933103} Theme Font & Size Changer, 46.5, false, {f69e22c7-bc50-414a-9269-0f5c344cd94c}
Important Modified Preferences
Name: Value
browser.cache.disk.capacity: 358400 browser.cache.disk.filesystem_reported: 1 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: 45.1.0 font.internaluseonly.changed: true font.size.fixed.x-western: 16 general.autoScroll: false gfx.blacklist.direct2d: 3 gfx.blacklist.layers.direct3d9: 3 gfx.blacklist.webgl.msaa: 4 mail.openMessageBehavior.version: 1 mail.spotlight.firstRunDone: true mailnews.database.global.datastore.id: 623ad97a-7f05-fe4b-8eed-b6401a65e43 mailnews.database.global.views.conversation.columns: {"threadCol":{"visible":true,"ordinal":"1"},"flaggedCol":{"visible":true,"ordinal":"3"},"attachmentCol":{"visible":false… mailnews.database.global.views.global.columns: {"threadCol":{"visible":true,"ordinal":"1"},"flaggedCol":{"visible":true,"ordinal":"3"},"attachmentCol":{"visible":false… network.auth.force-generic-ntlm-v1: true network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1464193480 places.history.expiration.transient_current_max_pages: 104858 plugin.importedState: true print.macosx.pagesetup-2: PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPCFET0NUWVBFIHBsaXN0IFBVQkxJQyAiLS8vQXBwbGUvL0RURCBQTElTVCAxLjAvL0VO… security.disable_button.openCertManager: false
Graphics
Vendor ID: 0x1002 Device ID: 0x6740 WebGL Renderer: ATI Technologies Inc. -- ATI Radeon HD 6770M OpenGL Engine -- 2.1 ATI-1.6.36 GPU Accelerated Windows: 0
AzureCanvasBackend: skia AzureSkiaAccelerated: 0 AzureFallbackCanvasBackend: none AzureContentBackend: quartz
JavaScript
Incremental GC: 1
Accessibility
Activated: 0 Prevent Accessibility: 0
Library Versions
Expected minimum version Version in use
NSPR 4.12 4.12
NSS 3.21.1 Basic ECC 3.21.1 Basic ECC
NSS Util 3.21.1 3.21.1
NSS SSL 3.21.1 Basic ECC 3.21.1 Basic ECC
NSS S/MIME 3.21.1 Basic ECC 3.21.1 Basic ECC
OUTGOING: , mail.cphart.co.uk:587, alwaysSTARTTLS, NTLM, true
As per your Troubleshooting Information your server settings for SMTP are exactly as requested by your IT folks.
An error occurred while sending mail: Unable to establish a secure link with Outgoing server (SMTP) mail.cphart.co.uk using STARTTLS since it doesn't advertise that feature.
The error message suggests the problem is on the server. So I'm afraid you'll need to go back to your IT folks.
Did this ever work before? Were there any changes recently?
It's been working fine for the last two weeks and my IT dept are saying nothing has been changed. I can even telnet on to the mail server from my mac, so my IT dept are saying its related to thunderbird.
You can run the following command from a terminal. Please post the result.
openssl s_client -connect mail.cphart.co.uk:587 -starttls smtp </dev/null </p>
I get this response:
CONNECTED(00000003) didn't found starttls in server response, try anyway...
I suppose that wasn't all you got?
Thats all terminal came back with.
Sorry very slow to respond but i just got this:
2681:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:/SourceCache/OpenSSL098/OpenSSL098-35.1/src/ssl/s23_clnt.c:607:
Take that response and show it to your IT folks. There is no proper TLS handshake, and the encrypted connection is never established.
Okulungisiwe
Ok thanks for your email, I've forwarded that info on to my IT dept. Doesn't help I'm the only one with a Mac in the company.
Your Troubleshooting Information shows you do have the 'ExQuilla for Microsoft Exchange' add-on installed. Why do you need it and what are you doing with it?
My IT dept tried to use that plugin when I had some problems a few weeks back, I don;t use it.
Then you should either disable or remove it via the Add-ons Manager.