"Cannot send message (Email body not accepted due to the following reason: "Internal queuing error"). What have I done wrong?

Crashing eM Client
1

I have been getting the following for the past few days "Cannot send message (Email body not accepted due to the following reason: “Internal queuing error”). What have I done wrong?
P.S. I too, LOVE eMClient!!! I have multiple pro accounts for all of my staff and all of our emails. Works way better than Outlook in my opinion.

2

Hello Corine, I’m afraid this is most likely a server issue, please switch to the “Log” tab in Operations, copy the content of the log and submit it to us here on the forum.

Thank you,

3

I attach the log as requested
23:20:49   MailExceptions.ItemOperationException: Cannot send message (Email body not accepted due to the following reason:
23:20:49     "4.2.0 Internal queueing error
23:20:49 ")
23:20:49 pop.talktalk.net [POP3]  Connected: To pop.talktalk.net
23:20:49 pop.talktalk.net [POP3]  Downloading messages: From pop.talktalk.net
23:20:49 pop.talktalk.net [POP3]  Disconnected: From pop.talktalk.net
23:20:49 pop.talktalk.net [POP3]  Disconnected: Done
23:20:49   MailExceptions.ItemOperationException: Cannot send message (Email body not accepted due to the following reason:
23:20:49     "4.2.0 Internal queueing error
23:20:49 ")
23:20:49   MailExceptions.ItemOperationException: Cannot send message (Email body not accepted due to the following reason:
23:20:49     "4.2.0 Internal queueing error
23:20:49 ")
23:20:50 pop.tiscali.co.uk [SMTP]  Disconnected: From pop.tiscali.co.uk
23:20:50 pop.tiscali.co.uk [SMTP]  Disconnected: Done
23:20:50 pop.tiscali.co.uk [POP3]  Connecting: To pop.tiscali.co.uk
23:20:50 pop.tiscali.co.uk [POP3]  Connected: To pop.tiscali.co.uk
23:20:51 pop.tiscali.co.uk [POP3]  Downloading messages: From pop.tiscali.co.uk
23:20:52 pop.tiscali.co.uk [POP3]  Disconnected: From pop.tiscali.co.uk
23:20:52 pop.tiscali.co.uk [POP3]  Disconnected: Done