fix first update error.

enzevalos_iphone/InboxViewController.swift

@@ -82,8 +82,11 @@ class InboxViewController: UITableViewController, InboxCellDelegator {
         dateFormatter.timeStyle = .medium
 
         tableView.register(UINib(nibName: "InboxTableViewCell", bundle: nil), forCellReuseIdentifier: "inboxCell")
-
-        AppDelegate.getAppDelegate().mailHandler.startIMAPIdleIfSupported()
+        do{
+            try AppDelegate.getAppDelegate().mailHandler.startIMAPIdleIfSupported()
+        } catch {
+            print("ERROR: Coould not establish connection to server!")
+        }
         NotificationCenter.default.addObserver(forName: Notification.Name.NSManagedObjectContextDidSave, object: nil, queue: nil, using: {
             [weak self] _ in
             self?.tableView.reloadData()

enzevalos_iphone/MailServerConnectionError.swift

@@ -21,7 +21,7 @@ enum MailServerConnectionError: Error {
     case NoError, ConnectionError, TLSNotAvailableError, ProtocolParseError, CertificateError, AuthenticationError,
     GmailIMAPNotEnabledError, GmailExceededBandwidthLimitError, GmailTooManySimultaneousConnectionsError, MobileMeMovedError,
     YahooUnavailableError, ImapIdleError, IdentityError, StartTLSNotAvailableError, AuthenticationRequiredError,
-    SMTPInvalidAccountError, ServerDateError, UnspecifiedError, StorageLimitSMTPError, NoInternetconnection
+    SMTPInvalidAccountError, ServerDateError, UnspecifiedError, StorageLimitSMTPError, NoInternetconnection, NoData
     
     var userRecommandations: [UserRecommandation] {
         get {
@@ -32,7 +32,7 @@ enum MailServerConnectionError: Error {
             case .AuthenticationError:
                 recommandations.append(.CheckPWAddr)
                 return recommandations
-            case .ConnectionError:
+            case .ConnectionError, .NoData:
                 recommandations.append(.CheckIMAPServerConfig)
                 recommandations.append(.CheckSMTPServerConfig)
                 recommandations.append(.CheckSSLConfiguration)

enzevalos_iphone/UserData.swift

@@ -125,7 +125,7 @@ struct UserManager {
 
     //Usable for paths too
     static func convertToFrontendFolderPath(from backendFolderPath: String, with delimiter: String = ".") -> String {
-        if let mcoConverted = (AppDelegate.getAppDelegate().mailHandler.IMAPSession.defaultNamespace?.components(fromPath: backendFolderPath) as? [String])?.joined(separator: delimiter) {
+        if let mcoConverted = (AppDelegate.getAppDelegate().mailHandler.IMAPSession?.defaultNamespace?.components(fromPath: backendFolderPath) as? [String])?.joined(separator: delimiter) {
             if backendFolderPath != mcoConverted && UserDefaults.standard.string(forKey: backendFolderPath) != mcoConverted {
                 UserDefaults.standard.set(mcoConverted, forKey: backendFolderPath)
                 UserDefaults.standard.set(backendFolderPath, forKey: mcoConverted)
@@ -141,7 +141,7 @@ struct UserManager {
 
     //Usable for paths too
     static func convertToBackendFolderPath(from frontendFolderPath: String) -> String {
-        if let mcoConverted = AppDelegate.getAppDelegate().mailHandler.IMAPSession.defaultNamespace?.path(forComponents: [frontendFolderPath]) {
+        if let mcoConverted = AppDelegate.getAppDelegate().mailHandler.IMAPSession?.defaultNamespace?.path(forComponents: [frontendFolderPath]) {
             if frontendFolderPath != mcoConverted && UserDefaults.standard.string(forKey: frontendFolderPath) != mcoConverted {
                 UserDefaults.standard.set(mcoConverted, forKey: frontendFolderPath)
                 UserDefaults.standard.set(frontendFolderPath, forKey: mcoConverted)