The message could not be sent because the connection to Outgoing server (SMTP) mail.twc.com was lost in the middle of the transaction. Try again.
This is a THUNDERBIRD Problem. When the same message is sent from the same from/to accounts using Outlook 365, Version 2203 (Build 15028.20228 Click-to-Run) the problem does not occur.
All Replies (4)
Double-check your server settings. See https://support.mozilla.org/en-US/questions/1161629 or https://support.mozilla.org/zu/questions/1289846
Thank you for your reply. This problem appears to have solved itself. Same port settings are use on other PC's such as those running Outlook 365 and those running Gnome Evolution under Ubuntu 21.10.
Moreover, there is a BIG difference between font size on original email and font size when message is received on Outlook 365. How can one have professional correspondence with most recipients using Outlook and have no control over the font size recipients receive?
See my latest reply on your other thread.