and what exactly is the error message you get?

Thanks Matt,

screen shot showing result of an attempt to send outgoing msges.

screen shot showing result of an attempt to download incoming msges.

Look forward to any advice.

Ahveetee

Damn I hate apples messages, chopped up and mangled.

However I can see enough of the message to read refused. So my guess is you have recently installed or updated an anti virus product.

In order for us to better investigate this issue, we'll need some more information.

Could you please do the following:

1. Open the menu > Help > Troubleshooting Information, then click Copy text to Clipboard.
2. Go to https://pastebin.com and paste the info from your Troubleshooting Information page, then copy the resulting URL.
3. Open a reply to this post, and paste the link to your troubleshooting information.

Next, we'll need you to provide answers to the following question:

• Does Thunderbird work in Thunderbird Safe mode?

Thanks for on-going help; much appreciated. i) Followed instructions meticulously; ii) No URL resulted; iii) Thunderbird did not work in Safe Mode. iv) should I attached the the troubleshooting text?

Hopefully you are able to offer further advice.

Ahveetee

oops on my part, I usually edit that lame canned response and missed it this time. So lets try again.

Could you please do the following:

1. Open the menu > Help > Troubleshooting Information, then click Copy text to Clipboard.
2. Open a reply to this post, and paste in your troubleshooting information.

Sent reply to "no-reply@support.mozilla.org" the auto address. Not sure if this works. Ahveetee

Hi Matt Trying this path as well as the auto reply button which entered no-reply@ etc. Thanks for continued support. Cheers Ahveetee

 Application Basics

   Name: Thunderbird
   Version: 60.8.0
   Build ID: 20190703133823

   Update Channel: release
   User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.8.0
   OS: Darwin 18.2.0

   Multiprocess Windows: 0/0 (Disabled)
   Web Content Processes:
   Stylo: content = true (enabled by default), chrome = true (enabled by default)
   Enterprise Policies:
   Google Location Service Key: Missing
   Google SafeBrowsing Key: Missing
   Mozilla Location Service Key: Missing
   Safe Mode: true

 Mail and News Accounts
   account1:
     INCOMING: account1, , (pop3) pop.snap.net.nz:110, plain, passwordCleartext
     OUTGOING: , smtp.snap.net.nz:587, SSL, none, true
     OUTGOING: , smtp.snap.net.nz:587, SSL, none, false
     OUTGOING: , smtp.snap.net.nz:587, SSL, none, false
     OUTGOING: , smtp.snap.net.nz:587, SSL, none, false

   account2:
     INCOMING: account2, , (none) Local Folders, plain, passwordCleartext

   account3:
     INCOMING: account3, , (im) prpl-gtalk, plain, 0

   account4:
     INCOMING: account4, , (pop3) POP.snap.net.nz:995, SSL, passwordCleartext
     OUTGOING: , smtp.snap.net.nz:587, SSL, none, true

   account5:
     INCOMING: account5, , (imap) imap.gmail.com:993, SSL, passwordCleartext
     OUTGOING: , smtp.gmail.com:465, SSL, passwordCleartext, true

 Crash Reports for the Last 3 Days

 All Crash Reports

 Extensions

     Name
     Version
     Enabled
     ID

     Lightning
     6.2.8
     false
     {e2fda1a4-762b-4020-b5ad-a41df1933103}

 Security Software

   Type: Name

     Antivirus:
     Antispyware:
     Firewall:

 Graphics

     Features
     Compositing: Basic
     Asynchronous Pan/Zoom: none
     WebGL 1 Driver WSI Info: -
     WebGL 1 Driver Renderer: WebGL is currently disabled.
     WebGL 1 Driver Version: -
     WebGL 1 Driver Extensions: -
     WebGL 1 Extensions: -
     WebGL 2 Driver WSI Info: -
     WebGL 2 Driver Renderer: WebGL is currently disabled.
     WebGL 2 Driver Version: -
     WebGL 2 Driver Extensions: -
     WebGL 2 Extensions: -
     Uses Tiling: true

     GPU #1
     Active: Yes
     Vendor ID: 0x8086
     Device ID: 0x0a2e

   GPU #2

     Diagnostics
     AzureCanvasAccelerated: 0
     AzureCanvasBackend: skia
     AzureContentBackend: skia
     AzureFallbackCanvasBackend: none
     TileHeight: 1024
     TileWidth: 1024

     Decision Log
     HW_COMPOSITING: disabled by user: Disabled by prefblocked by runtime: Acceleration blocked by safe-mode
     OPENGL_COMPOSITING: unavailable by default: Hardware compositing is disabled
     WEBRENDER: opt-in by default: WebRender is an opt-in featureunavailable by runtime: Build doesn't include WebRender
     OMTP: blocked by runtime: OMTP blocked by safe-mode

   Crash Guard Disabled Features

   Workarounds

   Failure Log

 Media

     Audio Backend: audiounit
     Max Channels: 2
     Preferred Channel Layout: stereo
     Preferred Sample Rate: 44100

     Output Devices

       Name
       Group
       Vendor
       State
       Preferred
       Format
       Channels
       Rate
       Latency

       Internal Speakers
       AppleHDAEngineOutput:1B,0,1,1:0
       Apple Inc.
       Enabled
       All
       default: F32LE, support: S16LE S16BE F32LE F32BE
       2
       default: 44100, support: 44100 - 96000
       294 - 4376

     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
       80 - 4162

 Important Modified Preferences

   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
   browser.download.folderList: 2
   browser.download.useDownloadDir: true
   extensions.lastAppVersion: 60.8.0
   font.internaluseonly.changed: false
   font.name.sans-serif.x-western: Times New Roman
   font.size.variable.x-western: 12
   media.gmp.storage.version.observed: 1
   network.cookie.prefsMigrated: true
   network.predictor.cleaned-up: true
   places.database.lastMaintenance: 1566154647
   places.history.expiration.transient_current_max_pages: 66607
   plugin.importedState: true
   print.print_bgcolor: false
   print.print_bgimages: false
   print.print_colorspace:
   print.print_command:
   print.print_downloadfonts: false
   print.print_duplex: -437918235
   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: 11.00
   print.print_paper_name:
   print.print_paper_size_type: 1
   print.print_paper_size_unit: 0
   print.print_paper_width: 8.50
   print.print_plex_name:
   print.print_resolution: -437918235
   print.print_resolution_name:
   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: 57
   print.print_unwriteable_margin_left: 25
   print.print_unwriteable_margin_right: 25
   print.print_unwriteable_margin_top: 25
   security.sandbox.content.tempDirSuffix: {71607579-32af-1e4f-ac1a-107aa40fd79f}
   storage.vacuum.last.index: 1
   storage.vacuum.last.places.sqlite: 1566645640

 Important Locked Preferences

 Places Database

 JavaScript

 Incremental GC: true

 Accessibility

   Activated: false
   Prevent Accessibility: 0

 Library Versions

     Expected minimum version
     Version in use

     NSPR
     4.19
     4.19

     NSS
     3.36.8
     3.36.8

     NSSSMIME
     3.36.8
     3.36.8

     NSSSSL
     3.36.8
     3.36.8

     NSSUTIL
     3.36.8
     3.36.8

 Sandbox

   Content Process Sandbox Level: 0
   Effective Content Process Sandbox Level: 1

 Internationalization & Localization

     Application Settings
     Requested Locales: ["en-US"]
     Available Locales: ["en-US"]
     App Locales: ["en-US"]
     Regional Preferences: ["en-NZ"]
     Default Locale: "en-US"

     Operating System
     System Locales: ["en-NZ"]
     Regional Preferences: ["en-NZ"]

account4:

    INCOMING: account4, , (pop3) POP.snap.net.nz:995, SSL, passwordCleartext
    OUTGOING: , smtp.snap.net.nz:587, SSL, none, true

Check spelling of server name and username.

• Incoming Mail Server (POP3): pop.snap.net.nz
• Port: 995
• Connection Security: SSL/TLS
• Authentication Method: Normal Password
• Username = Full email address.

Outgoing does not have any authentication; suggest you switch this on and try using port 465.

• Outgoing Mail Server (SMTP): smtp.snap.net.nz
• Port: 465
• Connection Security: SSL/TLS
• Authentication Method: Normal Password
• Username = Full email address.

Hi Toad-Hall Thanks for coming in with help. The settings you advise are exactly the ones I am using for ever. Very grateful you have given me a chance to ensure they match. What next I wonder? Cheers Ahveetee

Hi Toad-Hall Thanks for your input. The info you gave matches exactly the settings I have in place. Good to have confirmation that this aspect is OK. Mystery: on Sat 24 Aug NZ time 7 inwards messages appeared in my in-box; however, the usual alert about non-connectivity came on the screen when I tried to get mail. Trying to send still gives me the non-connectivity alert.

ISP fixed the problem at their end. Thanks to all for help and advice.