In TB 52.4.0 on linux: for all outgoing mail from gmail account, smtp server refuses connection for a few minutes, then accepts connection
I have TB 52.4 on Linux Mint 18 (Ubuntu 16.04). In my work network, every time I try to send a mail from my work (google apps account) or personal (gmail account), TB tries to connect to the smtp server and responds with a 'connection refused message' (see screenshot). This situation persists for a couple of minutes, and then somehow resolves itself, and the mail goes out. It happens every time, but only on my work network. At home and on say, phone hotspot, this does not happen.
Pasting below trouble shooting info from TB:
Application Basics
Name: Thunderbird Version: 52.4.0 User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 Profile Directory: Open Directory
(Local drive) Application Build ID: 20171009154419 Enabled Plugins: about:plugins Build Configuration: about:buildconfig Memory Use: about:memory Profiles: about:profiles
Mail and News Accounts account1: INCOMING: account1, , (imap) imap.gmail.com:993, SSL, OAuth2 OUTGOING: , smtp.gmail.com:587, alwaysSTARTTLS, OAuth2, true
account2: INCOMING: account2, , (none) Local Folders, plain, passwordCleartext
account3: INCOMING: account3, , (imap) imap.gmail.com:993, SSL, OAuth2 OUTGOING: , smtp.gmail.com:465, SSL, OAuth2, true
account4: INCOMING: account4, , (imap) imap.gmail.com:993, SSL, OAuth2 OUTGOING: , smtp.gmail.com:465, SSL, OAuth2, true
account5: INCOMING: account5, , (im) prpl-gtalk, plain, 0
Crash Reports
Extensions Lightning, 5.4, true, {e2fda1a4-762b-4020-b5ad-a41df1933103} Messaging Menu and Unity Launcher integration, 1.3.1, true, messagingmenu@mozilla.com Provider for Google Calendar, 3.3, true, {a62ef8ec-5fdc-40c2-873c-223b8a6925cc} Signature Switch, 1.6.16, true, {2ab1b709-ba03-4361-abf9-c50b964ff75d}
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 mailnews.database.global.datastore.id: 86b90dd4-de1f-46ca-80e3-29fa31b924d mailnews.database.global.views.conversation.columns: {"threadCol":{"visible":true,"ordinal":"1"},"flaggedCol":{"visible":true,"ordinal":"3"},"attachmentCol":{"visible":false… media.gmp.storage.version.observed: 1 network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1509177816 places.history.expiration.transient_current_max_pages: 122334 plugin.importedState: true print.print_bgcolor: false print.print_bgimages: false print.print_duplex: 0 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_page_delay: 50 print.print_paper_data: 0 print.print_paper_height: 11.69 print.print_paper_name: iso_a4 print.print_paper_size_unit: 0 print.print_paper_width: 8.27 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
Graphics
GPU #1 Description: Intel Open Source Technology Center -- Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2) Vendor ID: Intel Open Source Technology Center Device ID: Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2) Driver Version: 3.0 Mesa 11.2.0
Features WebGL Renderer: Intel Open Source Technology Center -- Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2) -- 3.0 Mesa 11.2.0
AzureCanvasBackend: skia AzureCanvasAccelerated: 0 AzureFallbackCanvasBackend: none AzureContentBackend: skia CairoUseXRender: 0
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
Wšě wotmołwy (1)
Adding a screenshot of the TB message