Keep getting error msg "Sending of username did not succeed. Mail server mail.comcast.net responded: [AUTH] Authentication failed."
Out of the blue, I am getting error msg every time I open Thunderbird:
Sending of username did not succeed. Mail server mail.comcast.net responded: [AUTH] Authentication failed.
When I click on OK, I get another message:
Login Failed Login to server mail.comcast.net failed. Enter New Password Cancel Retry
I've tried resetting my password but it hasn't helped. I am NOT computer savvy, so please make any suggested fixes as simple as possible. Many thanks!
Out of the blue, I am getting error msg every time I open Thunderbird:
Sending of username did not succeed. Mail server mail.comcast.net responded: [AUTH] Authentication failed.
When I click on OK, I get another message:
Login Failed
Login to server mail.comcast.net failed.
Enter New Password Cancel Retry
I've tried resetting my password but it hasn't helped. I am NOT computer savvy, so please make any suggested fixes as simple as possible. Many thanks!
All Replies (6)
Go to the Help Menu in Thunderbird. Click Troubleshooting Information. Click Copy to Clipboard Come back here and paste that info into a reply window.
If it errors out as too much info, delete the font and printer info. It is not needed for this issue anyway.
Application Basics
Name: Thunderbird Version: 52.4.0 User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 Profile Folder: Show in Finder Application Build ID: 20171004092449 Enabled Plugins: about:plugins Build Configuration: about:buildconfig Memory Use: about:memory Profiles: about:profiles
Mail and News Accounts
account1:
INCOMING: account1, , (none) Local Folders, plain, passwordCleartext
account2:
INCOMING: account2, , (pop3) mail.comcast.net:110, plain, passwordCleartext
OUTGOING: , smtp.comcast.net:587, plain, passwordCleartext, true
account3:
INCOMING: account3, , (imap) imap.googlemail.com:993, SSL, passwordCleartext
OUTGOING: , smtp.googlemail.com:465, SSL, passwordCleartext, true
account4:
INCOMING: account4, , (pop3) mail.comcast.net:995, SSL, passwordCleartext
OUTGOING: , smtp.comcast.net:587, alwaysSTARTTLS, passwordCleartext, true
Crash Reports https://crash-stats.mozilla.com/report/index/bp-35408fe4-95df-4f60-952a-df80c2170306 (3/6/17) https://crash-stats.mozilla.com/report/index/bp-2d253d6a-9c53-4a64-8d29-c19862150923 (9/23/15) https://crash-stats.mozilla.com/report/index/bp-4536204a-be86-4e45-99e0-72e442140512 (5/12/14) https://crash-stats.mozilla.com/report/index/bp-1eb2b8e4-ca80-4c0b-8677-b41372140320 (3/20/14) https://crash-stats.mozilla.com/report/index/bp-a554a3a1-1ec9-4341-805b-05de22130704 (7/3/13)
Extensions
Lightning, 5.4.4, true, {e2fda1a4-762b-4020-b5ad-a41df1933103}
Important Modified Preferences
Name: Value
accessibility.typeaheadfind.flashBar: 0
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: 52.4.0
font.internaluseonly.changed: true
mail.openMessageBehavior.version: 1
mail.spotlight.firstRunDone: true
mailnews.database.global.datastore.id: ebe1589e-4c90-a148-aa38-1d55726823e
mailnews.database.global.views.conversation.columns: {"threadCol":{"visible":true,"ordinal":"1"},"flaggedCol":{"visible":true,"ordinal":"21"},"attachmentCol":{"visible":fals…
mailnews.database.global.views.global.columns: {"threadCol":{"visible":true,"ordinal":"1"},"flaggedCol":{"visible":true,"ordinal":"21"},"attachmentCol":{"visible":fals…
media.gmp.storage.version.observed: 1
network.cookie.cookieBehavior: 3
network.cookie.lifetimePolicy: 1
network.cookie.prefsMigrated: true
network.predictor.cleaned-up: true
places.database.lastMaintenance: 1511890052
places.history.expiration.transient_current_max_pages: 56812
plugin.disable_full_page_plugin_for_types: video/x-ms-wmv
plugin.importedState: true
print.macosx.pagesetup: PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPCFET0NUWVBFIHBsaXN0IFBVQkxJQyAiLS8vQXBwbGUgQ29tcHV0ZXIvL0RURCBQTElT…
print.macosx.pagesetup-2: PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPCFET0NUWVBFIHBsaXN0IFBVQkxJQyAiLS8vQXBwbGUvL0RURCBQTElTVCAxLjAvL0VO…
print.print_bgcolor: false
print.print_bgimages: false
print.print_command:
print.print_downloadfonts: true
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
print.print_paper_size: 6619250
print.print_paper_size_type: 1
print.print_paper_size_unit: 0
print.print_paper_width: 8.50
print.print_printer:
print.print_reversed: false
print.print_scaling: 1.00
print.print_shrink_to_fit: true
print.print_to_file: false
print.print_unwriteable_margin_bottom: 56
print.print_unwriteable_margin_left: 25
print.print_unwriteable_margin_right: 25
print.print_unwriteable_margin_top: 25
privacy.donottrackheader.enabled: true
security.sandbox.content.tempDirSuffix: {ac4515f1-4163-ae4d-8a57-feed2400d6f2}
Graphics
GPU #1
Vendor ID: 0x10de
Device ID: 0x0fea
Features
WebGL Renderer: NVIDIA Corporation -- NVIDIA GeForce GT 755M OpenGL Engine -- 2.1 NVIDIA-10.10.14 310.42.25f02
AzureCanvasBackend: skia
AzureCanvasAccelerated: 0
AzureFallbackCanvasBackend: none
AzureContentBackend: skia
TileHeight: 1024
TileWidth: 1024
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 is your account #2 as listed in your Troubleshooting Info. You are using the unsecure port of 110 and no Authentication just like the error message states.
Change those server settings to: Port 995 - SSL/TLS - Normal Password for the POP server Port 465 - SSL/TLS - Normal Password for the SMTP server
To do this right click the account in the Folder Pane on the left side and select Settings. The POP settings are in Server Settings. To change the SMTP settings go to the very bottom of the list in the Settings screen and click Outgoing Server (SMTP) Select the incorrect account and select Edit
Thank you so much for the timely replies. Unfortunately, making those settings changes (see images) didn't fix it. I'm still getting error messages. Here's the current troubleshooting information (after I made the changes):
Application Basics
Name: Thunderbird Version: 52.4.0 User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 Profile Folder: Show in Finder Application Build ID: 20171004092449 Enabled Plugins: about:plugins Build Configuration: about:buildconfig Memory Use: about:memory Profiles: about:profiles
Mail and News Accounts
account1:
INCOMING: account1, , (none) Local Folders, plain, passwordCleartext
account2:
INCOMING: account2, , (pop3) mail.comcast.net:995, SSL, passwordCleartext
OUTGOING: , smtp.comcast.net:465, SSL, passwordCleartext, true
account3:
INCOMING: account3, , (imap) imap.googlemail.com:993, SSL, passwordCleartext
OUTGOING: , smtp.googlemail.com:465, SSL, passwordCleartext, true
account4:
INCOMING: account4, , (pop3) mail.comcast.net:995, SSL, passwordCleartext
OUTGOING: , smtp.comcast.net:465, SSL, passwordCleartext, true
Crash Reports https://crash-stats.mozilla.com/report/index/bp-35408fe4-95df-4f60-952a-df80c2170306 (3/6/17) https://crash-stats.mozilla.com/report/index/bp-2d253d6a-9c53-4a64-8d29-c19862150923 (9/23/15) https://crash-stats.mozilla.com/report/index/bp-4536204a-be86-4e45-99e0-72e442140512 (5/12/14) https://crash-stats.mozilla.com/report/index/bp-1eb2b8e4-ca80-4c0b-8677-b41372140320 (3/20/14) https://crash-stats.mozilla.com/report/index/bp-a554a3a1-1ec9-4341-805b-05de22130704 (7/3/13)
Extensions
Lightning, 5.4.4, true, {e2fda1a4-762b-4020-b5ad-a41df1933103}
Important Modified Preferences
Name: Value
accessibility.typeaheadfind.flashBar: 0
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: 52.4.0
font.internaluseonly.changed: true
mail.openMessageBehavior.version: 1
mail.spotlight.firstRunDone: true
mailnews.database.global.datastore.id: ebe1589e-4c90-a148-aa38-1d55726823e
mailnews.database.global.views.conversation.columns: {"threadCol":{"visible":true,"ordinal":"1"},"flaggedCol":{"visible":true,"ordinal":"21"},"attachmentCol":{"visible":fals…
mailnews.database.global.views.global.columns: {"threadCol":{"visible":true,"ordinal":"1"},"flaggedCol":{"visible":true,"ordinal":"21"},"attachmentCol":{"visible":fals…
media.gmp.storage.version.observed: 1
network.cookie.cookieBehavior: 3
network.cookie.lifetimePolicy: 1
network.cookie.prefsMigrated: true
network.predictor.cleaned-up: true
places.database.lastMaintenance: 1511890052
places.history.expiration.transient_current_max_pages: 56812
plugin.disable_full_page_plugin_for_types: video/x-ms-wmv
plugin.importedState: true
print.macosx.pagesetup: PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPCFET0NUWVBFIHBsaXN0IFBVQkxJQyAiLS8vQXBwbGUgQ29tcHV0ZXIvL0RURCBQTElT…
print.macosx.pagesetup-2: PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPCFET0NUWVBFIHBsaXN0IFBVQkxJQyAiLS8vQXBwbGUvL0RURCBQTElTVCAxLjAvL0VO…
print.print_bgcolor: false
print.print_bgimages: false
print.print_command:
print.print_downloadfonts: true
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
print.print_paper_size: 6619250
print.print_paper_size_type: 1
print.print_paper_size_unit: 0
print.print_paper_width: 8.50
print.print_printer:
print.print_reversed: false
print.print_scaling: 1.00
print.print_shrink_to_fit: true
print.print_to_file: false
print.print_unwriteable_margin_bottom: 56
print.print_unwriteable_margin_left: 25
print.print_unwriteable_margin_right: 25
print.print_unwriteable_margin_top: 25
privacy.donottrackheader.enabled: true
security.sandbox.content.tempDirSuffix: {ac4515f1-4163-ae4d-8a57-feed2400d6f2}
Graphics
GPU #1
Vendor ID: 0x10de
Device ID: 0x0fea
Features
WebGL Renderer: NVIDIA Corporation -- NVIDIA GeForce GT 755M OpenGL Engine -- 2.1 NVIDIA-10.10.14 310.42.25f02
AzureCanvasBackend: skia
AzureCanvasAccelerated: 0
AzureFallbackCanvasBackend: none
AzureContentBackend: skia
TileHeight: 1024
TileWidth: 1024
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
Please ignore the "see images" above.
You could try switching your SMTP settings back to the way account 4 was in your original info. Here is the Comcast page for their settings and they say use 587 as first choice. I use 465 with no issues. https://www.xfinity.com/support/internet/email-client-programs-with-xfinity-email/