Intermittent Connection to SMTP Server

Hi all,

Intermittently I cannot send emails and get an error message stating it cannot connect to the SMTP Server. Shows this in the log:

7:16:50 AM The Briars [IMAP]  Copying messages
7:16:50 AM The Briars [IMAP]  Copying messages: Done
7:16:50 AM The Briars [IMAP]  Synchronizing message flags: For folder The Briars/INBOX
7:16:50 AM The Briars [IMAP]  Synchronizing message flags: Done
7:17:53 AM The Briars [IMAP]  Synchronizing messages: For folder The Briars/INBOX
7:17:53 AM The Briars [IMAP]  Synchronizing messages: Done
7:18:15 AM The Briars [SMTP]  Connecting: To The Briars
7:18:15 AM The Briars [IMAP]  Synchronizing message flags: For folder The Briars/INBOX
7:18:15 AM The Briars [IMAP]  Synchronizing message flags: Done
7:18:15 AM The Briars [SMTP]  MailClient.Accounts.ConnectionException: Invalid server reply when connecting: 'Unexpected end of stream.'.
7:18:15 AM    at MailClient.Protocols.Smtp.SmtpSendCommand.Connect(WorkerStatus status)
7:18:15 AM    at MailClient.Protocols.Smtp.SmtpSendCommand.Execute(WorkerStatus status)
7:18:15 AM    at MailClient.Commands.Command.Process(WorkerStatus status)

At 7:16AM this morning I started up eM Client and then forwarded an email, getting the error message. The forward message is in the Outbox of the Local Folders and exiting and restarting eM Client sends the email.

Any ideas on what might be the problem would be appreciated.

TIA

No ideas anyone?

TIA

Seems similar to this:
https://forum.emclient.com/t/emails-getting-stuck-in-local-folders-outbox/62966/3