1985918 - error sending mail. The mail server responded: EndAsyncProcessing:NotInDataMode

Status: RESOLVED INCOMPLETE

(MailNews Core :: Networking: SMTP, defect)

Description

[be]

Attachment: WhatsApp Image 2025-08-28 at 12.18.25.jpeg

Steps to reproduce:

I want to send email , but failed and show error messages :

sending of the message failed.
An error occurred while sending mail. The mail server responded:
EndAsyncProcessing:NotInDataMode. Please check the message and try again.

Actual results:

sending of the message failed.
An error occurred while sending mail. The mail server responded:
EndAsyncProcessing:NotInDataMode. Please check the message and try again.

i tried to send again and still error EndAsyncProcessing:NotInDataMode

Expected results:

I tried downgrading the version to the 199 bellow and it worked to send email.
The current version I installed is the latest version 140 and update to the latest 142 is still error

Comment 1

[be]

I tried downgrading the version to the 139 bellow and it worked to send email.

Comment 2

[Magnus Melin [:mkmelin]]

Please attach an smtp log. https://wiki.mozilla.org/MailNews:Logging

Comment 3

[be]

(In reply to Magnus Melin [:mkmelin] from comment #2)

Please attach an smtp log. https://wiki.mozilla.org/MailNews:Logging

1756953695127 addons.xpi WARN Checking C:\Program Files\Mozilla Thunderbird\distribution\extensions for addons
InAppNotifications: Error fetching in-app notifications: TypeError: NetworkError when attempting to fetch resource. NotificationUpdater.sys.mjs:284:20
1756953736213 addons.repository ERROR Error in addon metadata lookup: GET https://services.addons.thunderbird.net/api/v3/addons/search/?guid=thunderbird-compact-light%40mozilla.org%2Cthunderbird-compact-dark%40mozilla.org%2Cdefault-theme%40mozilla.org%2Cgoogle%40search.mozilla.org%2Cddg%40search.mozilla.org%2Camazondotcom%40search.mozilla.org%2Cwikipedia%40search.mozilla.org%2Cbing%40search.mozilla.org&lang=en-US failed Log.sys.mjs:722
Error: Polling for changes failed: NetworkError: Network request failed.
pollChanges resource://services-settings/remote-settings.sys.mjs:434
RemoteSettingsComponents.sys.mjs:20:15
1756953767483 Toolkit.Telemetry ERROR TelemetrySend::_doPing - error making request to https://incoming-telemetry.thunderbird.net/submit/telemetry/f97359bd-0eca-45bd-a26e-669d8569c0ae/first-shutdown/Thunderbird/140.2.0/esr/20250819130129?v=4: eUnreachable Log.sys.mjs:722
1756953767484 Toolkit.Telemetry ERROR TelemetrySend::sendPersistedPings - failed to send ping f97359bd-0eca-45bd-a26e-669d8569c0ae: {"isTrusted":true} Log.sys.mjs:722
1756953767486 Toolkit.Telemetry ERROR TelemetrySend::_doPing - error making request to https://incoming-telemetry.thunderbird.net/submit/telemetry/9f318f0c-6543-4939-95e9-2f31039e250f/main/Thunderbird/140.2.0/esr/20250819130129?v=4: eUnreachable Log.sys.mjs:722
1756953767487 Toolkit.Telemetry ERROR TelemetrySend::sendPersistedPings - failed to send ping 9f318f0c-6543-4939-95e9-2f31039e250f: {"isTrusted":true} Log.sys.mjs:722
1756953767505 Toolkit.Telemetry ERROR TelemetrySend::_doPing - error making request to https://incoming-telemetry.thunderbird.net/submit/telemetry/44661c7f-c898-4b97-924c-d659d573c8fe/health/Thunderbird/140.2.0/esr/20250819130129?v=4: eUnreachable Log.sys.mjs:722
1756953767520 Toolkit.Telemetry ERROR TelemetrySend::_doPing - error making request to https://incoming-telemetry.thunderbird.net/submit/telemetry/f97359bd-0eca-45bd-a26e-669d8569c0ae/first-shutdown/Thunderbird/140.2.0/esr/20250819130129?v=4: eUnreachable Log.sys.mjs:722
1756953767521 Toolkit.Telemetry ERROR TelemetrySend::sendPersistedPings - failed to send ping f97359bd-0eca-45bd-a26e-669d8569c0ae: {"isTrusted":true} Log.sys.mjs:722
1756953767521 Toolkit.Telemetry ERROR TelemetrySend::_doPing - error making request to https://incoming-telemetry.thunderbird.net/submit/telemetry/9f318f0c-6543-4939-95e9-2f31039e250f/main/Thunderbird/140.2.0/esr/20250819130129?v=4: eUnreachable Log.sys.mjs:722
1756953767522 Toolkit.Telemetry ERROR TelemetrySend::sendPersistedPings - failed to send ping 9f318f0c-6543-4939-95e9-2f31039e250f: {"isTrusted":true} Log.sys.mjs:722
NS_ERROR_FAILURE: Ignore PDF.js for this download. PdfStreamConverter.sys.mjs:1074
NotFoundError: No such JSProcessActor 'BrowserToolboxDevToolsProcess'
mailnews.smtp: Command failed: null EndAsyncProcessing:NotInDataMode; currentAction=_actionStream SmtpClient.sys.mjs:578:19
mailnews.smtp: Message sending failed. SmtpClient.sys.mjs:1329:21
mailnews.send: Sending failed; An error occurred while sending mail. The mail server responded: EndAsyncProcessing:NotInDataMode. Please check the message and try again., exitCode=2147500037, originalMsgURI=imap-message://[e-mail]/INBOX#17258 MessageSend.sys.mjs:343:32
NotFoundError: No such JSProcessActor 'BrowserToolboxDevToolsProcess' 7
Uncaught TypeError: can't access property "ROW_HEIGHTS", this._rowElementClass is undefined
handleEvent chrome://messenger/content/auto-tree-view.mjs:79
updateWindow resource:///modules/UIDensity.sys.mjs:26
registerWindow resource:///modules/UIDensity.sys.mjs:62
<anonymous> chrome://messenger/content/addressbook/abContactsPanel.js:21
auto-tree-view.mjs:79:1

Comment 4

[be]

Attachment: error.jpeg

Comment 5

[be]

Attachment: error2.jpeg

Comment 6

[be]

Attachment: error2.jpeg

Comment 7

[be]

Attachment: MessageSend.sys.mjs:343:32.txt

Comment 8

[Magnus Melin [:mkmelin]]

be: please follow the instructions on the wiki page and set mailnews.smtp.loglevel to All

Given there's other networking issues listed there, are you sure it's not AV/Firewall messing with your network traffic?

Comment 9

[Magnus Melin [:mkmelin]]

be: if you still see this, we need the full logs, per comment 8.

Comment 10

[Magnus Melin [:mkmelin]]

Nobody else reported this, and we don't have logs. -> INCOMPLETE