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Email not sending intermitantly, Have to resend almost every time. CAUSE: Avast outbound scanning.

  • 3 replies
  • 1 has this problem
  • 15 views
  • Last reply by Wayne Mery

Dewy Meadows
Dewy Meadows
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I have been struggling with this for months. I really like Thunderbird but I have tried everything. Receiving emails works fine, it is just the SMTP that hangs. I will have to abandon this and go to outlook if I cant resolve. It Does eventually go but it takes a couple tries. The examples given, I resent and it was fine.



Running: Time of this report: 11/2/2023, 07:29:33

  • Machine name: DMF1
  • Machine Id: {B975F495-EF2D-485D-BE61-50AC33ADAE65}
  • Operating System: Windows 11 Pro 64-bit (10.0, Build 22621) (22621.ni_release.220506-1250)
  • Language: English (Regional Setting: English)
  • System Manufacturer: Dell Inc.
  • System Model: Inspiron 3580
  • BIOS: 1.25.0 (type: UEFI)
  • Processor: Intel(R) Core(TM) i3-8145U CPU @ 2.10GHz (4 CPUs), ~2.3GHz
  • Memory: 16384MB RAM
  • Available OS Memory: 16258MB RAM
  • Page File: 10308MB used, 8381MB available
  • Windows Dir: C:\Windows (Windows 11)
  • DirectzX Version: DirectX 12
  • DX Setup Parameters: Not found
  • User DPI Setting: 120 DPI (125 percent)
  • System DPI Setting: 96 DPI (100 percent)
  • DWM DPI Scaling: Disabled
  • Miracast: Available, with HDCP
  • Microsoft Graphics Hybrid: Not Supported
  • DirectX Database Version: 1.4.7

I have avast! AV (All Exceptions For Program and Ports) EMAIL Server Office365

I have been struggling with this for months. I really like Thunderbird but I have tried everything. Receiving emails works fine, it is just the SMTP that hangs. I will have to abandon this and go to outlook if I cant resolve. It Does eventually go but it takes a couple tries. The examples given, I resent and it was fine. Running: Time of this report: 11/2/2023, 07:29:33 * Machine name: DMF1 * Machine Id: {B975F495-EF2D-485D-BE61-50AC33ADAE65} * Operating System: Windows 11 Pro 64-bit (10.0, Build 22621) (22621.ni_release.220506-1250) * Language: English (Regional Setting: English) * System Manufacturer: Dell Inc. * System Model: Inspiron 3580 * BIOS: 1.25.0 (type: UEFI) * Processor: Intel(R) Core(TM) i3-8145U CPU @ 2.10GHz (4 CPUs), ~2.3GHz * Memory: 16384MB RAM * Available OS Memory: 16258MB RAM * Page File: 10308MB used, 8381MB available * Windows Dir: C:\Windows (Windows 11) * DirectzX Version: DirectX 12 * DX Setup Parameters: Not found * User DPI Setting: 120 DPI (125 percent) * System DPI Setting: 96 DPI (100 percent) * DWM DPI Scaling: Disabled * Miracast: Available, with HDCP * Microsoft Graphics Hybrid: Not Supported * DirectX Database Version: 1.4.7 I have avast! AV (All Exceptions For Program and Ports) EMAIL Server Office365
Attached screenshots

Modified by Wayne Mery

Chosen solution

I got It FIXED!!! All things setup properly as suggested (Thanks) So In AVAST! in you can tell it to not scan outgoing email. So Avast!>Menu Settings>Protection> Core Shields>Mail Shield>un-tick "Scan Outbound emails STMP".

This fixed the problem with avast!.

Thanks again

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All Replies (3)

sfhowes
sfhowes
  • Top 10 Contributor
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Try it with Avast removed (not just disabled) or with Windows running in safe mode, to bypass startup apps like Avast. Check that the smtp.office365.com authentication is OAuth2, like the incoming.

Dewy Meadows
Dewy Meadows Question owner
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Chosen Solution

I got It FIXED!!! All things setup properly as suggested (Thanks) So In AVAST! in you can tell it to not scan outgoing email. So Avast!>Menu Settings>Protection> Core Shields>Mail Shield>un-tick "Scan Outbound emails STMP".

This fixed the problem with avast!.

Thanks again

Wayne Mery
Wayne Mery
  • Moderator
  • Top 10 Contributor
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THank you for posting your solution.