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Thunderbird consistently cannot send email saying it does not recognize outgoing server after verifying as indicated above.

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I first received an error message a couple weeks ago when attempting to send an email "This site attempts to identify itself with invalid information". After verifying the outgoing server and port information from the att.com website for snet.net email, I now get a message that Thunderbird doesn't recognize the server. Attached is info from Thunderbird (some info from Thunderbird info has been deleted due to file size) and last screenshot. Thanks.

 Application Basics
   Name: Thunderbird
   Version: 68.4.1
   Build ID: 20200108224327
   Update Channel: release
   User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:68.0) Gecko/20100101 Thunderbird/68.4.1
   OS: Darwin 17.7.0
   Multiprocess Windows: 0/0
             Disabled
   Remote Processes: 0
   Enterprise Policies: Inactive
   Google Location Service Key: Missing
   Google Safebrowsing Key: Missing
   Mozilla Location Service Key: Missing
   Safe Mode: false
 Mail and News Accounts
   account1:
     INCOMING: account1, , (none) Local Folders, plain, passwordCleartext
   account2:
     INCOMING: account2, , (pop3) pop.att.yahoo.com:995, SSL, passwordCleartext
     OUTGOING: , ATT:465, plain, passwordCleartext, true
 Crash Reports for the Last 3 Days
 Remote Processes
   Type: Count
 Extensions
     Name
     Version
     Enabled
     ID
       Amazon.com
       1.1
       true
       amazondotcom@search.mozilla.org
       Bing
       1.0
       true
       bing@search.mozilla.org
       DuckDuckGo
       1.0
       true
       ddg@search.mozilla.org
       Google
       1.0
       true
       google@search.mozilla.org
       Lightning
       68.4.1
       true
       {e2fda1a4-762b-4020-b5ad-a41df1933103}
       Twitter
       1.0
       true
       twitter@search.mozilla.org
       Wikipedia (en)
       1.0
       true
       wikipedia@search.mozilla.org
 Security Software
   Type: Name
     Antivirus:
     Antispyware:
     Firewall:
 Graphics
     Features
     Compositing: Basic
     Asynchronous Pan/Zoom: none
     WebGL 1 Driver WSI Info: CGL
     WebGL 1 Driver Renderer: Intel Inc. -- Intel HD Graphics 5000 OpenGL Engine
     WebGL 1 Driver Version: 4.1 INTEL-10.36.26
     WebGL 1 Driver Extensions: GL_ARB_blend_func_extended GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_ES2_compatibility GL_ARB_explicit_attrib_location GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader5 GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_occlusion_query2 GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_separate_shader_objects GL_ARB_shader_bit_encoding GL_ARB_shader_subroutine GL_ARB_shading_language_include GL_ARB_tessellation_shader GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_cube_map_array GL_ARB_texture_gather GL_ARB_texture_query_lod GL_ARB_texture_rgb10_a2ui GL_ARB_texture_storage GL_ARB_texture_swizzle GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_vertex_attrib_64bit GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_viewport_array GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_texture_compression_s3tc GL_EXT_texture_filter_anisotropic GL_EXT_texture_sRGB_decode GL_APPLE_client_storage GL_APPLE_container_object_shareable GL_APPLE_flush_render GL_APPLE_object_purgeable GL_APPLE_rgb_422 GL_APPLE_row_bytes GL_APPLE_texture_range GL_ATI_texture_mirror_once GL_NV_texture_barrier
     WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_disjoint_timer_query EXT_float_blend EXT_frag_depth EXT_shader_texture_lod EXT_sRGB EXT_texture_compression_rgtc EXT_texture_filter_anisotropic OES_element_index_uint OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context
     WebGL 2 Driver WSI Info: CGL
     WebGL 2 Driver Renderer: Intel Inc. -- Intel HD Graphics 5000 OpenGL Engine
     WebGL 2 Driver Version: 4.1 INTEL-10.36.26
     WebGL 2 Driver Extensions: GL_ARB_blend_func_extended GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_ES2_compatibility GL_ARB_explicit_attrib_location GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader5 GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_occlusion_query2 GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_separate_shader_objects GL_ARB_shader_bit_encoding GL_ARB_shader_subroutine GL_ARB_shading_language_include GL_ARB_tessellation_shader GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_cube_map_array GL_ARB_texture_gather GL_ARB_texture_query_lod GL_ARB_texture_rgb10_a2ui GL_ARB_texture_storage GL_ARB_texture_swizzle GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_vertex_attrib_64bit GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_viewport_array GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_texture_compression_s3tc GL_EXT_texture_filter_anisotropic GL_EXT_texture_sRGB_decode GL_APPLE_client_storage GL_APPLE_container_object_shareable GL_APPLE_flush_render GL_APPLE_object_purgeable GL_APPLE_rgb_422 GL_APPLE_row_bytes GL_APPLE_texture_range GL_ATI_texture_mirror_once GL_NV_texture_barrier
     WebGL 2 Extensions: EXT_color_buffer_float EXT_disjoint_timer_query EXT_float_blend EXT_texture_compression_rgtc EXT_texture_filter_anisotropic OES_texture_float_linear WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
     Uses Tiling: true
     Uses Tiling (Content): true
     Off Main Thread Painting Enabled: true
     Off Main Thread Painting Worker Count: 3
     Target Frame Rate: 60
     GPU #1
     Active: Yes
     Vendor ID: 0x8086
     Device ID: 0x0a26
   GPU #2
     Diagnostics
     AzureCanvasBackend: skia
     AzureContentBackend: skia
     AzureFallbackCanvasBackend: none
     TileHeight: 512
     TileWidth: 512
     Decision Log
     HW_COMPOSITING: disabled by user: Disabled by pref
     OPENGL_COMPOSITING: unavailable by default: Hardware compositing is disabled
     WEBRENDER: opt-in by default: WebRender is an opt-in featureunavailable-no-hw-compositing by runtime: Hardware compositing is disabled
     WEBRENDER_QUALIFIED: blacklisted by env: No qualified hardware
   Crash Guard Disabled Features
   Workarounds
   Failure Log
 Media
     Audio Backend: audiounit
     Max Channels: 2
     Preferred Sample Rate: 44100
     Output Devices
       Name
       Group
       Vendor
       State
       Preferred
       Format
       Channels
       Rate
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       Headphones
       AppleHDAEngineOutput:1B,0,1,1:0
       Apple Inc.
       Enabled
       All
       default: F32LE, support: S16LE S16BE F32LE F32BE
       2
       default: 44100, support: 44100 - 96000
       28 - 4110
     Input Devices
       Name
       Group
       Vendor
       State
       Preferred
       Format
       Channels
       Rate
       Latency
       Internal Microphone
       AppleHDAEngineInput:1B,0,1,0:1
       Apple Inc.
       Enabled
       All
       default: F32LE, support: S16LE S16BE F32LE F32BE
       2
       default: 44100, support: 44100 - 96000
       23 - 4105
 Important Modified Preferences
   accessibility.typeaheadfind.flashBar: 0
   browser.cache.disk.amount_written: 57805
   browser.cache.disk.capacity: 1048576
   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: 68.4.1
   font.internaluseonly.changed: false
   font.name.monospace.x-western: Lucida Grande
   font.name.serif.x-western: Lucida Grande
   font.size.variable.x-western: 14
   gfx.blacklist.dxva: 3
   idle.lastDailyNotification: 1579275221
   media.gmp.storage.version.observed: 1
   network.cookie.cookieBehavior: 3
   network.cookie.lifetimePolicy: 2
   network.cookie.prefsMigrated: true
   network.predictor.cleaned-up: true
   places.database.lastMaintenance: 1579275221
   places.history.expiration.transient_current_max_pages: 112348
   plugin.importedState: true
   plugin.state.silverlight: 0
   print.print_bgcolor: false
   print.print_bgimages: false
   print.print_command:
   print.print_downloadfonts: false
   print.print_evenpages: true
   print.print_in_color: true
   print.print_margin_bottom: 0.5
   print.print_margin_left: 0.5
   print.print_margin_right: 0.5
   print.print_margin_top: 0.5
   print.print_oddpages: true
   print.print_orientation: 0
   print.print_pagedelay: 500
   print.print_paper_data: 0
   print.print_paper_height: 11.00
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   print.print_paper_width: 8.50
   print.print_printer:
   print.print_reversed: false
   print.print_scaling: 1.00
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   security.sandbox.content.tempDirSuffix: {92247bb3-b2b2-3446-898c-2993b8b6f751}
   security.sandbox.plugin.tempDirSuffix: bfcbc3a9-4a6d-4942-a6ce-bcc669cd6dc1
   signon.importedFromSqlite: true
   storage.vacuum.last.index: 0
   storage.vacuum.last.places.sqlite: 1575478788
 Important Locked Preferences
 Places Database
 JavaScript
 Incremental GC: true
 Accessibility
   Activated: false
   Prevent Accessibility: 0
I first received an error message a couple weeks ago when attempting to send an email "This site attempts to identify itself with invalid information". After verifying the outgoing server and port information from the att.com website for snet.net email, I now get a message that Thunderbird doesn't recognize the server. Attached is info from Thunderbird (some info from Thunderbird info has been deleted due to file size) and last screenshot. Thanks. Application Basics Name: Thunderbird Version: 68.4.1 Build ID: 20200108224327 Update Channel: release User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 OS: Darwin 17.7.0 Multiprocess Windows: 0/0 Disabled Remote Processes: 0 Enterprise Policies: Inactive Google Location Service Key: Missing Google Safebrowsing Key: Missing Mozilla Location Service Key: Missing Safe Mode: false Mail and News Accounts account1: INCOMING: account1, , (none) Local Folders, plain, passwordCleartext account2: INCOMING: account2, , (pop3) pop.att.yahoo.com:995, SSL, passwordCleartext OUTGOING: , ATT:465, plain, passwordCleartext, true Crash Reports for the Last 3 Days Remote Processes Type: Count Extensions Name Version Enabled ID Amazon.com 1.1 true amazondotcom@search.mozilla.org Bing 1.0 true bing@search.mozilla.org DuckDuckGo 1.0 true ddg@search.mozilla.org Google 1.0 true google@search.mozilla.org Lightning 68.4.1 true {e2fda1a4-762b-4020-b5ad-a41df1933103} Twitter 1.0 true twitter@search.mozilla.org Wikipedia (en) 1.0 true wikipedia@search.mozilla.org Security Software Type: Name Antivirus: Antispyware: Firewall: Graphics Features Compositing: Basic Asynchronous Pan/Zoom: none WebGL 1 Driver WSI Info: CGL WebGL 1 Driver Renderer: Intel Inc. -- Intel HD Graphics 5000 OpenGL Engine WebGL 1 Driver Version: 4.1 INTEL-10.36.26 WebGL 1 Driver Extensions: GL_ARB_blend_func_extended GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_ES2_compatibility GL_ARB_explicit_attrib_location GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader5 GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_occlusion_query2 GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_separate_shader_objects GL_ARB_shader_bit_encoding GL_ARB_shader_subroutine GL_ARB_shading_language_include GL_ARB_tessellation_shader GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_cube_map_array GL_ARB_texture_gather GL_ARB_texture_query_lod GL_ARB_texture_rgb10_a2ui GL_ARB_texture_storage GL_ARB_texture_swizzle GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_vertex_attrib_64bit GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_viewport_array GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_texture_compression_s3tc GL_EXT_texture_filter_anisotropic GL_EXT_texture_sRGB_decode GL_APPLE_client_storage GL_APPLE_container_object_shareable GL_APPLE_flush_render GL_APPLE_object_purgeable GL_APPLE_rgb_422 GL_APPLE_row_bytes GL_APPLE_texture_range GL_ATI_texture_mirror_once GL_NV_texture_barrier WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_disjoint_timer_query EXT_float_blend EXT_frag_depth EXT_shader_texture_lod EXT_sRGB EXT_texture_compression_rgtc EXT_texture_filter_anisotropic OES_element_index_uint OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context WebGL 2 Driver WSI Info: CGL WebGL 2 Driver Renderer: Intel Inc. -- Intel HD Graphics 5000 OpenGL Engine WebGL 2 Driver Version: 4.1 INTEL-10.36.26 WebGL 2 Driver Extensions: GL_ARB_blend_func_extended GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_ES2_compatibility GL_ARB_explicit_attrib_location GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader5 GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_occlusion_query2 GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_separate_shader_objects GL_ARB_shader_bit_encoding GL_ARB_shader_subroutine GL_ARB_shading_language_include GL_ARB_tessellation_shader GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_cube_map_array GL_ARB_texture_gather GL_ARB_texture_query_lod GL_ARB_texture_rgb10_a2ui GL_ARB_texture_storage GL_ARB_texture_swizzle GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_vertex_attrib_64bit GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_viewport_array GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_texture_compression_s3tc GL_EXT_texture_filter_anisotropic GL_EXT_texture_sRGB_decode GL_APPLE_client_storage GL_APPLE_container_object_shareable GL_APPLE_flush_render GL_APPLE_object_purgeable GL_APPLE_rgb_422 GL_APPLE_row_bytes GL_APPLE_texture_range GL_ATI_texture_mirror_once GL_NV_texture_barrier WebGL 2 Extensions: EXT_color_buffer_float EXT_disjoint_timer_query EXT_float_blend EXT_texture_compression_rgtc EXT_texture_filter_anisotropic OES_texture_float_linear WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context Uses Tiling: true Uses Tiling (Content): true Off Main Thread Painting Enabled: true Off Main Thread Painting Worker Count: 3 Target Frame Rate: 60 GPU #1 Active: Yes Vendor ID: 0x8086 Device ID: 0x0a26 GPU #2 Diagnostics AzureCanvasBackend: skia AzureContentBackend: skia AzureFallbackCanvasBackend: none TileHeight: 512 TileWidth: 512 Decision Log HW_COMPOSITING: disabled by user: Disabled by pref OPENGL_COMPOSITING: unavailable by default: Hardware compositing is disabled WEBRENDER: opt-in by default: WebRender is an opt-in featureunavailable-no-hw-compositing by runtime: Hardware compositing is disabled WEBRENDER_QUALIFIED: blacklisted by env: No qualified hardware Crash Guard Disabled Features Workarounds Failure Log Media Audio Backend: audiounit Max Channels: 2 Preferred Sample Rate: 44100 Output Devices Name Group Vendor State Preferred Format Channels Rate Latency Headphones AppleHDAEngineOutput:1B,0,1,1:0 Apple Inc. Enabled All default: F32LE, support: S16LE S16BE F32LE F32BE 2 default: 44100, support: 44100 - 96000 28 - 4110 Input Devices Name Group Vendor State Preferred Format Channels Rate Latency Internal Microphone AppleHDAEngineInput:1B,0,1,0:1 Apple Inc. 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Приложенные скриншоты

Выбранное решение

My guess is you have undated the incoming password in Thunderbird, but not the outgoing one. They are two different passwords, Yahoo tossing a hissy instead of simply denying the connection means that your probably not prompted for the outgoing password. Options > Security > passwords. Click the saved passwords button and delete and SMTP passwords saved there for ATT or Yahoo. Or change the saved value if it is wrong.

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  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:71.0) Gecko/20100101 Firefox/71.0

Дополнительная информация

christ1
  • Top 25 Contributor
2206 решений 16164 ответов
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account 2: OUTGOING: , ATT:465, plain

'ATT' isn't a valid server name. Check with your email provider about the correct outgoing server settings and fix them in Thunderbird.

<blockquote> account 2: OUTGOING: , ATT:465, plain </blockquote> 'ATT' isn't a valid server name. Check with your email provider about the correct outgoing server settings and fix them in Thunderbird.
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Here is all the info I can find on the att.com page for email settings. I have used the settings as indicated, but see no server name. Further ideas?

INSTRUCTIONS & INFO POP3 and IMAP email settings Your desktop email program (like Microsoft Outlook or Apple Mail) or mobile email app will use either POP3 or IMAP to send and receive email. Be sure to use the right server and port settings.

These settings are good for email addresses with any of these domains: @ameritech.net, @att.net, @bellsouth.net, @flash.net, @nvbell.net, @pacbell.net, prodigy.net, @sbcglobal.net, @snet.net, @swbell.net, or @wans.net.

Email protocol Inbound server Inbound port SSL Outbound server Outbound port POP3 inbound.att.net 995 Yes outbound.att.net 465 IMAP imap.mail.att.net 993 Yes smtp.mail.att.net 465 or 587

Here is all the info I can find on the att.com page for email settings. I have used the settings as indicated, but see no server name. Further ideas? INSTRUCTIONS & INFO POP3 and IMAP email settings Your desktop email program (like Microsoft Outlook or Apple Mail) or mobile email app will use either POP3 or IMAP to send and receive email. Be sure to use the right server and port settings. These settings are good for email addresses with any of these domains: @ameritech.net, @att.net, @bellsouth.net, @flash.net, @nvbell.net, @pacbell.net, prodigy.net, @sbcglobal.net, @snet.net, @swbell.net, or @wans.net. Email protocol Inbound server Inbound port SSL Outbound server Outbound port POP3 inbound.att.net 995 Yes outbound.att.net 465 IMAP imap.mail.att.net 993 Yes smtp.mail.att.net 465 or 587
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christ1
  • Top 25 Contributor
2206 решений 16164 ответов
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As per your Troubleshooting Information you do seem to have some sort of mix-up between ATT and Yahoo. What's correct for your account, I don't know.

If it's ATT, then use the settings as per your above information, depending on your account type (POP or IMAP).

Chose 'SSL/TLS' for 'Connection security' in the Thunderbird Account Settings for both, incoming, and outgoing server. This will auto-fill the correct port number.

Note, for ATT you may need to create a Secure Mail Key. https://www.att.com/support/article/email-support/KM1240308

As per your Troubleshooting Information you do seem to have some sort of mix-up between ATT and Yahoo. What's correct for your account, I don't know. If it's ATT, then use the settings as per your above information, depending on your account type (POP or IMAP). Chose 'SSL/TLS' for 'Connection security' in the Thunderbird Account Settings for both, incoming, and outgoing server. This will auto-fill the correct port number. Note, for ATT you may need to create a Secure Mail Key. https://www.att.com/support/article/email-support/KM1240308

Изменено christ1

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Have created a secure mail key with ATT and have entered it into the account information for Thunderbird following step-by-step directions at ATT.com. Not much has changed, except the error message now reads "Failed due to unexpected error 80004005"

Have created a secure mail key with ATT and have entered it into the account information for Thunderbird following step-by-step directions at ATT.com. Not much has changed, except the error message now reads "Failed due to unexpected error 80004005"
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sfhowes
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1918 решений 9612 ответов
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First, change the connection security on the outgoing server to SSL/TLS, as mentioned above. The AT&T settings are here.

Second, delete the old password in Preferences/Security/Passwords/Saved Passwords, restart TB, and enter the secure key when prompted.

First, change the connection security on the outgoing server to SSL/TLS, as mentioned above. The AT&T settings are [https://www.att.com/support/article/dsl-high-speed/KM1010523 here]. Second, delete the old password in Preferences/Security/Passwords/Saved Passwords, restart TB, and enter the secure key when prompted.
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Thank you, but I've done those things as described.

Thank you, but I've done those things as described.
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christ1
  • Top 25 Contributor
2206 решений 16164 ответов
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Please post again your Troubleshooting Information. Just the 'Mail and News Accounts' section will do.

Please post again your Troubleshooting Information. Just the 'Mail and News Accounts' section will do.
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Thanks for your patience. I wanted to update the Troubleshooting Info before replying, but I can't remember where it was found. Please advise.

Thanks for your patience. I wanted to update the Troubleshooting Info before replying, but I can't remember where it was found. Please advise.
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christ1
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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.

Again, just the 'Mail and News Accounts' section will do.

At the top right of the Thunderbird window, click the menu button <img src="https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/gallery/images/2014-01-10-13-08-08-f52b8c.png">, then select Help > Troubleshooting Information. Press the "Copy text to clipboard button" and paste the information into your reply. Again, just the 'Mail and News Accounts' section will do.
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Thanks again.

Mail and News Accounts ID Incoming server Outgoing servers Name Connection security Authentication method Name Connection security Authentication method Default? account1 (none) Local Folders None Normal password account2 (pop3) pop.att.yahoo.com:995 SSL/TLS Normal password outbound.att.net:465 SSL/TLS Normal password true

Thanks again. Mail and News Accounts ID Incoming server Outgoing servers Name Connection security Authentication method Name Connection security Authentication method Default? account1 (none) Local Folders None Normal password account2 (pop3) pop.att.yahoo.com:995 SSL/TLS Normal password outbound.att.net:465 SSL/TLS Normal password true
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christ1
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So are you saying you still get the "Failed due to unexpected error 80004005" error message upon sending, even after applying all the changes suggested above?

Can you post a screenshot of the error?

So are you saying you still get the "Failed due to unexpected error 80004005" error message upon sending, even after applying all the changes suggested above? Can you post a screenshot of the error?
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Here's the message-

Here's the message-
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Matt
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My guess is you have undated the incoming password in Thunderbird, but not the outgoing one. They are two different passwords, Yahoo tossing a hissy instead of simply denying the connection means that your probably not prompted for the outgoing password. Options > Security > passwords. Click the saved passwords button and delete and SMTP passwords saved there for ATT or Yahoo. Or change the saved value if it is wrong.

My guess is you have undated the incoming password in Thunderbird, but not the outgoing one. They are two different passwords, Yahoo tossing a hissy instead of simply denying the connection means that your probably not prompted for the outgoing password. Options > Security > passwords. Click the saved passwords button and delete and SMTP passwords saved there for ATT or Yahoo. Or change the saved value if it is wrong.
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Passwords, both incoming and outgoing, are set to Yahoo/ATT OAuth keys as directed by ATT. Thanks for your help.

Passwords, both incoming and outgoing, are set to Yahoo/ATT OAuth keys as directed by ATT. Thanks for your help.
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Solved finally by randomly editing outgoing server settings. Apparently my user name was not required previously. When I added that, the outgoing server asked for my password (I used the new OAuth key) and it restored my account. Thanks for all your suggestions.

Solved finally by randomly editing outgoing server settings. Apparently my user name was not required previously. When I added that, the outgoing server asked for my password (I used the new OAuth key) and it restored my account. Thanks for all your suggestions.
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