Below is an explanation of how to check and, if necessary, adjust the login name specified when setting up the email program since mail programs have stored the login name for mailbox retrieval locally. If it contains "msx", action is required. For a successful login when setting up an email client, you generally need to have as your




Microsoft Outlook for Windows

You can find out your logon data in Windows in the Credential Manager.

  1. Search for "“Credential Manager”" using the search mask in the Start bar and open the program.
    Explaining screenshot
    German Screenshot of the Windows search mask in the Start bar
  2. Select "Windows Credentials".
  3. In the list of credentials, you will find an entry
  4. To change the login data, select the entry and "Delete" it. This will provoke Outlook to ask for the credentials again when you start the program. You can then change the "user name" by selecting "Use another account" under "More options". Now enter "user\zih-login" in the topmost of the two input fields , replacing the string "zih-login" with your own ZIH login. The second field expects your ZIH password.


Apple Mail for macOS

You can view your credentials in the Account Settings of Apple Mail:

  1. Start Apple Mail and open the preferences
  2. Select the "Accounts" tab.
  3. In the left pane, click on the Exchange account of TU Dresden.
  4. In the right pane, select the "Server Settings" tab.
  5. In the Username field, you can have your "ZIH login" or "user\zih-login", replacing the string "zih-login" with your own ZIH login.
  6. When exiting the settings, you will be asked if you want to save the Exchange account changes. Confirm this by clicking on "Save".
Dialog when exiting Mail Settings asks "Save Exchange account changes?" and explains "If you don't save the changes, they will be lost." The "Save" button is selected next to the unselected "Do not save" and "Cancel" buttons
Save dialog when exiting Apple Mail preferences
Server settings of the Exchange account in Apple Mail. User name field represented with "user\zih-login or zih-login".
Server settings of the Exchange account in Apple Mail

Apple Mail for iOS/iPadOS

  1. From the Home Screen, open the "Settings" app.
  2. Navigate to the "Mail" entry.
  3. Select the "Accounts" entry.
  4. Select the TU mailbox from the account list.
  5. Tap on the first entry "Account" with your mail address.
  6. Check whether "user" is entered in the "Domain" field.
  7. Only your "ZIH Login" should be entered as "Username"
  8. Confirm with "Done" in the upper right corner.
Screenshots from an iPhone to all listed points with corresponding marker
Steps for iOS

Mozilla Thunderbird

You can find out your login details in the main menu of Thunderbird under "Account Settings".

Expanded hamburger menu of Thunderbird with "Account Settings" entry highlighted
Open Account Settings
  1. Call up the "Account Settings":
  2. In the left pane with the list of mail accounts, select the TU mailbox by clicking on its name.
  3. Select the "Server Settings" under the mailbox name. If necessary you have to show the options by clicking on the arrow in front of the mailbox name.
  4. The "User Name" should not contain "msx". If necessary, please change the entry to "user\zih-login".
  5. After that, in the list of mail accounts, find the "Outgoing mail server (SMTP)" and click on it.
  6. In the right pane, in the list of configured servers, select the TU server and click the "Edit..." button.
  7. In the last field, change the "User name" to "user\zih-login", replacing the string "zih-login" with your own ZIH login, as well, if necessary.
  8. Click "OK".
Server settings of the TU mailbox with the "user name" field marked, whose entry contains "user\zihlogin".
Thunderbird - Server Settings
Settings of the outgoing mail server of the TU mailbox in the account settings of Thunderbird with marked field "username", whose entry contains "user\zihlogin".
Thunderbird - settings for the outgoing mail server

Mozilla Thunderbird with TbSync

If it is no longer possible to change the login name in the user interface, you must delete the ID here and then create it again. If necessary, you must then give the new calendar a suitable color again.

Alternatively, you can change the login name manually in the configuration file. Please proceed as follows:

  1. Determine the directory in which your Thunderbird profile is located. You can find the directory name in the server settings of the email account. To do this, first right-click on your TU mailbox on the left side in the overview of e-mail accounts. In the following pop-up menu, select the item "Settings".
    Explanatory screenshot of Thunderbird main screen with TU mailbox context menu open with marker on Settings entry.
    Thunderbird - open account settings via context menu
  2. Now select the menu item "Server settings".
    Explanatory screenshot of Thunderbird's account settings with marker on the Server Settings menu item in the Mail Accounts list.
    Thunderbird - account settings
  3. Here please scroll all the way down. Under the item "local folder" you will find the path to the profile. Copy the beginning of the path and paste it into the Explorer. The path of the profile directory usually has the following form:
  4. Now close Thunderbird.
  5. Create a backup copy of the file "[profiledirectory]/TbSync/accounts68.json" (e.g.: "$HOME/.thunderbird/abcdefgh.default/TbSync/accounts68.json").
  6. Open the file "[profile directory]/TbSync/accounts68.json" with a text editor. This is a file in JSON format with the configuration values. It consists of different sections separated by curly braces {} and the actual values in the form "identifier: value".
  7. Here, look for the value pair "user:" and change the value for the identifier to "". Alternatively, you can use the value "user\zih-login" for the identifier, replacing the string "zih-login" with your own ZIH login.
  8. Now start Thunderbird. Then go to the "Application menu" by clicking on the button with the three dashes at the top right of the window.
    Erklärenderes Bildschirmfoto eines Teils der Hauptoberfläche Thunderbirds mit Marker auf dem Anwendungsmenü-Button.
    Thunderbird - open application menu
  9. Then click on the "Add-ons" menu item.
    Explanatory screenshot with open application menu with marker on the Add-ons entry.
    Thunderbird - open add-on manager via application menu
  10. In the following window click on the "wrench icon" at "TbSync".
    Explanatory screenshot of Thunderbirds add-ons management with marker on the settings button of TbSync extension.
    Thunderbird - add-on manager
  11. A new window will open. Check the "Calendar" and "Tasks" boxes here and then click the "Synchronize now" button at the bottom right. After that, the access is fully configured again.
    Explanatory screenshot of TbSync's account settings in the "Synchronization status" tab with markers on the checked checkboxes of the Calendar and Tasks resources and the "Synchronize now" button. The status section shows the warning "Account needs to be synchronized." and the status of the two mentioned resources shows the text "Not synchronized".
    TbSync - account management

Mozilla Thunderbird with DavMail

Here, similar to TbSync, there is no possibility to change the existing identifier. It is now again possible to either delete the existing account and create a new one or to manually change the configuration file. To do this, please proceed as follows:

  1. Determine the profile directory. (see "Mozilla Thunderbird with TbSync" step 1-3)
  2. Close Thunderbird.
  3. Make a backup copy of the "[profiledirectory]/prefs.js" file.
  4. Open the file "prefs.js" in a text editor and look for a line in the following form:
    user_pref("calendar.registry.f4f8d00d-a26d-45e5-8e1a-3f86837027c9.uri", "");
  5. Again, remove "msx" after the "@" here. (Please do not change the server address ""!)
  6. Save and close the file.
  7. Start Thunderbird. You will now be asked again for the password of your ZIH login by the next synchronization of the calendar.

Gmail for Android

Please note that the procedure may differ on Android versions customized by companies, especially in the names and presence of menu items.

Exchange account (default)

If the TU mailbox was set up as an Exchange account, the login information can be changed via the system settings.

  1. Open the "Settings" app.
  2. There, select the entry "Password and Accounts" or search for "Accounts" or "Manage Accounts".
  3. Select the TU mailbox with your mail address among your accounts with the type "Exchange".
  4. Go to the "Account Settings" and select the TU mailbox with your mail address again in the next step.
  5. In the "Server Settings" section, then go to the "Inbound Server Settings".
  6. If there is a "msx" in the "Domain\Username" field, change the entry to "user\zih-login", replacing the string "zih-login" with your own ZIH login.
  7. Confirm the change by tapping "Next".
Screenshots of a Google Pixel smartphone for all listed points with corresponding marker
Steps for Android

IMAP or POP3 account

On Android, unfortunately, there is no way to change the IMAP or POP3 retrieval of an Exchange account once it has been set up. Therefore, you have to delete the previous account here and then create a new one. This leads to the fact that all settings must be made again. It is best to make a note of your old settings and save any texts that have been set (e.g. the email signature) so that you can configure everything as usual again later. For example, these can be:

Fairmail for Android

  1. Go to the "Settings", there to the "Main settings".
  2. Under item 1 "Add and change accounts" click on "Manual setup and account options" and there on "Accounts".
  3. Click on the configured TU account.
  4. If the username contains "msx", please change it to "user\zih-login", replacing the string "zih-login" with your own ZIH login.

Other Clients

Mailbox retrieval via IMAP / POP3 in other clients

Go to the respective settings options of the email client and replace all login information containing the pattern „@msx“ with "user\zih-login" or "zih-login".