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Email Settings

This page describes how to set up you email client for using our mail service.

Mail server

Our mail server is: owa.ist.ac.at, this server can be reached by

  • https://owa.ist.ac.at/ .. webmail and/or activce sync
  • owa.ist.ac.at:993 .. IMAPS (SSL/TTLS)
  • owa.ist.ac.at:587 .. SMTP (Submission, STARTTLS)


Thunderbird config works on Windows, Linux and Macs. Latest Versions of Thunderbird come with integrated Lightning, so you can also subscribe to Calendars by installing this add-on: https://github.com/Ericsson/exchangecalendar/releases

Configuring Email

Please make sure you use firstname.lastname@ist.ac.at as your Email address and your ISTuser as the Username.

Normal password is sufficient here, as the connection to the server is already secured by SSL – for either IMAPS and SMTP.

Using the Calendar

Download the latest release from https://github.com/Ericsson/exchangecalendar/releases, and install it as an Extension to your Thunderbird.

A restart of Thunderbird is necessary.

  • Go to File-> New -> Calendar -> On the Network
  • select Microsoft Exchange 2007/2010/2013
  • Click Next
  • Enter the name of your calendar and (optionally) select a color, if you want reminders and the E-Mail address for this calendar.
  • Click Next
  • Now select “Hosted Exchange” and copy https://owa.ist.ac.at/ews/exchange.asmx as the “Server URL:”
    • Enter username (ISTUser)
    • Click “Check server and mailbox”, you’ve to enter your ISTpassword.
    • After the Calendar folder is selected, you can also add different calendars by using “Browse”
  • Click Next
  • “Your calendar was been created” 🙂

Having all contacts

To access your Address Book and also to all IST E-Mail addresses, open the Address Book in Thunderbird.

  • On the left, select “Exchange contacts” and click “Add Exchange contact folder”.
  • Fill in a Name, use the same URL as above (https://owa.ist.ac.at/ews/exchange.asmx), and also Username.
  • To get all IST contacts, tick “Add global address list to search results”
  • When clicking on “Check server and mailbox”, the correct “folder base” -> Contacts folder should be selected.
  • By pressing “Save” the configuration is finished, and when you compose messages – just enter the names of recipients.
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