Comment 4 for bug 1899485

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.86 Safari/537.36

Steps to reproduce:

I noticed after updating to 52.1.1 64-bit on Linux Mint 17.3 Cinnamon 64-bit (Cinnamon v 2.8.8) the send button fails with error messages in the debug log under certain circumstances.

Everything works fine when using an account tied to google
The failure is specific to an office365 account that I've setup through a local exchange relay program called davmail

The issue does not present when composing new messages, only on replying to messages.

Send button, ctrl+enter, file Send do not work

I have tried running in safe-mode and the error persists

This error presented after an update to 52.1.1 I performed today. I do not remember prior version of TB.

Actual results:

Mail is not sent and errors are logged in the debug window:

NS_ERROR_NOT_IMPLEMENTED: Component returned failure code: 0x80004001 (NS_ERROR_NOT_IMPLEMENTED) [nsIMsgCompose.expandMailingLists] MsgComposeCommands.js:4451
An error occurred executing the cmd_sendWithCheck command: [Exception... "Component returned failure code: 0x80004001 (NS_ERROR_NOT_IMPLEMENTED) [nsIMsgCompose.expandMailingLists]" nsresult: "0x80004001 (NS_ERROR_NOT_IMPLEMENTED)" location: "JS frame :: chrome://messenger/content/messengercompose/MsgComposeCommands.js :: expandRecipients :: line 4451" data: no] globalOverlay.js:103
NS_ERROR_NOT_IMPLEMENTED: Component returned failure code: 0x80004001 (NS_ERROR_NOT_IMPLEMENTED) [nsIMsgCompose.expandMailingLists] MsgComposeCommands.js:4451
An error occurred executing the cmd_sendButton command: [Exception... "Component returned failure code: 0x80004001 (NS_ERROR_NOT_IMPLEMENTED) [nsIMsgCompose.expandMailingLists]" nsresult: "0x80004001 (NS_ERROR_NOT_IMPLEMENTED)" location: "JS frame :: chrome://messenger/content/messengercompose/MsgComposeCommands.js :: expandRecipients :: line 4451" data: no] globalOverlay.js:103

Expected results:

Mail should have been delivered.