Connection Failed... but it's working!

I see the red triangle signaling that Connection Failed but in reality I can receive and send message without problems. So it’s not a real issue but it’s annoying. I do not have a VPN and tried by de-activaring MalwareBytes, but the red triangle remained.
Any hint/suggestion?

If you go to Menu > Operations then click on the Log tab, you should find the error there.

Hi Gary, thanks for the quick answer. In the Log tab of the Menu → Operations I find the following text which I am not able to use to solve the problem. Any hint/indication? (The text repeats periodically).

16:14:18 [email protected] IMAP Sincronizzazione dell’elenco cartelle
16:14:18 [email protected] IMAP Sincronizzazione cartella ‘/Posta in arrivo’
16:14:18 [email protected] [IMAP] MailClient.Accounts.ConnectionException: La sincronizzazione della cartella ‘[email protected]/Posta in arrivo’ è fallita a causa del seguente errore: Connessione persa con il server
—> MailClient.Imap.Base.ConnectionLostException: Connessione persa con il server
at MailClient.Imap.Base.Extensions.<>c__DisplayClass30_0.<g__SlowAsyncPath|1>d.MoveNext()
— End of stack trace from previous location —
at MailClient.Imap.Base.Connection.ReceiveAsync()
— End of inner exception stack trace —
at MailClient.Protocols.Imap.ImapActionCommand.ExecuteInternalSync(WorkerStatus status)
at MailClient.Protocols.Imap.ImapActionCommand.Execute(WorkerStatus status)
at MailClient.Commands.Command.Process(WorkerStatus status)
— End of stack trace from previous location —
at MailClient.Protocols.Imap.ImapAccount.SynchronizeIntAsync(Boolean forced)
at MailClient.Protocols.Common.SynchronizableMailAccount.<>c__DisplayClass7_0.<b__0>d.MoveNext()
IMAP_SERVER_TYPE = Dovecot
EnqueuedStackTrace =
at MailClient.Protocols.Common.ItemSynchronizer2.<>c__DisplayClass40_0.<EnqueueSynchronize>b__0() at MailClient.Protocols.Common.AccountBase.RunIfOnline(Action actionIfOnline, Action actionIfOffline) at MailClient.Protocols.Common.ItemSynchronizer2.Synchronize(Folder folder, SynchronizationPriority priority, Action1 completed) at MailClient.Storage.Application.ItemCollection2.Synchronize(SynchronizationPriority priority, Action1 completed, Boolean fromUI) at MailClient.Storage.Application.Folder.Synchronize(SynchronizationPriority priority, Boolean fromUI) at MailClient.Protocols.Imap.ImapFolderSynchronizer.FolderActivated(Folder folder, Boolean goingOnline) at MailClient.Protocols.Common.FolderSynchronizer.GoOnlinePost() at MailClient.Protocols.Imap.ImapFolderSynchronizer.GoOnlinePost() at MailClient.Protocols.Imap.ImapAccount.GoOnlineInt() at MailClient.Protocols.Common.AccountBase.ChangeOnlineState(Boolean online, OfflineReason offlineReason) at MailClient.Protocols.Common.AccountBase.GoOnline() at MailClient.Protocols.Common.AccountBase.RunIfOnline[T](Func1 actionIfOnline, Func`1 actionIfOffline)
at MailClient.Protocols.Common.SynchronizableMailAccount.Synchronize(SynchronizationPriority priority)
at MailClient.Accounts.BindingAccountBase.Receive()
at MailClient.Accounts.AccountManager.ReceiveAllInternal(Boolean checkIncludeInGlobalOperations)
at MailClient.Accounts.DesktopAccountManager.timerSendAndReceive_Tick(Object sender, EventArgs e)
at System.Windows.Forms.Timer.OnTick(EventArgs e)
at System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, WM msg, IntPtr wparam, IntPtr lparam)
at Interop.User32.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.Interop.Mso.IMsoComponentManager.FPushMessageLoop(UIntPtr dwComponentID, msoloop uReason, Void* pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(msoloop reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(msoloop reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(ApplicationContext context)
at MailClient.Program.<>c.b__187_3()
at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)
at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
at System.Windows.Forms.Control.InvokeMarshaledCallbacks()
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.Form.WndProc(Message& m)
at MailClient.Common.UI.Forms.BaseForm.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, WM msg, IntPtr wparam, IntPtr lparam)
at Xilium.CefGlue.Interop.libcef.run_message_loop()
at MailClient.Program.Main(String args)
GUIStatus_Exception_Reported = True