Thunderbird Can Receive but Not Send
Email provider settings:
Username – this is your full email address Password – your chosen email password Incoming mail server IMAP or POP3: mail.uwclub.net Incoming port IMAP: 993 or POP3: 995 Outgoing mail SMTP server: mail.uwclub.net Outgoing port SMTP TLS: 587 or SSL: 465 Make sure that your security settings are set-up to enable TLS (or SSL if not available)
Troubleshooting information:
Application Basics
Name: Thunderbird Version: 52.6.0 User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 Profile Folder: Open Folder
(Local drive) Application Build ID: 20180123185941 Enabled Plugins: about:plugins Build Configuration: about:buildconfig Memory Use: about:memory Profiles: about:profiles
Mail and News Accounts account2: INCOMING: account2, , (none) Local Folders, plain, passwordCleartext
account3: INCOMING: account3, , (pop3) mail.uwclub.net:995, SSL, passwordCleartext OUTGOING: , mail.uwclub.net:465, SSL, passwordCleartext, true
Crash Reports
Extensions Lightning, 5.4.6, false, {e2fda1a4-762b-4020-b5ad-a41df1933103} Important Modified Preferences
Name: Value
accessibility.lastLoadDate: 1519753896 browser.cache.disk.capacity: 358400 browser.cache.disk.filesystem_reported: 1 extensions.lastAppVersion: 52.6.0 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: dc514ba4-65f0-45fe-af80-34697e727fd media.gmp.storage.version.observed: 1 network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1519679804 places.history.expiration.transient_current_max_pages: 122334 security.sandbox.content.tempDirSuffix: {5eb0fdca-25db-4018-b53f-984934c0a354} Graphics
GPU #1 Description: Intel(R) HD Graphics 630 Vendor ID: 0x8086 Device ID: 0x5912 RAM: Unknown Drivers: igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32 Driver Version: 21.20.16.4526 Driver Date: 9-23-2016
Features Direct2D: false DirectWrite: true (10.0.16299.15) WebGL Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 630 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
Email provider settings: Username – this is your full email address Password – your chosen email password Incoming mail server IMAP or POP3: mail.uwclub.net Incoming port IMAP: 993 or POP3: 995 Outgoing mail SMTP server: mail.uwclub.net Outgoing port SMTP TLS: 587 or SSL: 465 Make sure that your security settings are set-up to enable TLS (or SSL if not available) Troubleshooting information: Application Basics Name: Thunderbird Version: 52.6.0 User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 Profile Folder: Open Folder (Local drive) Application Build ID: 20180123185941 Enabled Plugins: about:plugins Build Configuration: about:buildconfig Memory Use: about:memory Profiles: about:profiles Mail and News Accounts account2: INCOMING: account2, , (none) Local Folders, plain, passwordCleartext account3: INCOMING: account3, , (pop3) mail.uwclub.net:995, SSL, passwordCleartext OUTGOING: , mail.uwclub.net:465, SSL, passwordCleartext, true Crash Reports Extensions Lightning, 5.4.6, false, {e2fda1a4-762b-4020-b5ad-a41df1933103} Important Modified Preferences Name: Value accessibility.lastLoadDate: 1519753896 browser.cache.disk.capacity: 358400 browser.cache.disk.filesystem_reported: 1 extensions.lastAppVersion: 52.6.0 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: dc514ba4-65f0-45fe-af80-34697e727fd media.gmp.storage.version.observed: 1 network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1519679804 places.history.expiration.transient_current_max_pages: 122334 security.sandbox.content.tempDirSuffix: {5eb0fdca-25db-4018-b53f-984934c0a354} Graphics GPU #1 Description: Intel(R) HD Graphics 630 Vendor ID: 0x8086 Device ID: 0x5912 RAM: Unknown Drivers: igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32 Driver Version: 21.20.16.4526 Driver Date: 9-23-2016 Features Direct2D: false DirectWrite: true (10.0.16299.15) WebGL Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 630 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
Thunderbird Can Receive but Not Send
Source: https://support.mozilla.org/en-US/questions/1207695