Data Networks Department also provides a jabber server, accessible for students and staff at MU.


Hostname:  jabber.ics.muni.cz Validity
Fingerprint (SHA1):  90:9B:F6:48:EE:A7:E7:C7:3A:84:8F:B6:21:F3:02:74:BD:36:C8:B1 Dec 8 00:00:00 2011 GMT - Dec 7 23:59:59 2013 GMT
Fingerprint (SHA1): 92:05:8C:B7:3C:FD:B8:26:6D:D7:EE:08:A8:77:09:05:DB:71:6B:5B Dec 9 00:00:00 2013 GMT - Dec 9 23:59:59 2015 GMT
Fingerprint (SHA1):  55:D7:41:17:57:66:E9:FD:46:CC:03:14:70:9F:38:AD:36:2D:4D:C7 Dec 14 00:00:00 2015 GMT - Dec 14 23:59:59 2018 GMT

How to register? 

You can register on this link, where the registration form will be displayed after you authenticate yourself with your UČO and secondary password. The user name must be 3 to 16 characters long and may only include letters (in any case, diacritics are not allowed), digits and dash. 

Please note that your UČO is logged after your succesfull registration on the server.

What is a jabber?

Jabber (XMPP) is an open source protocol, which was created mainly in order to support IM (instant messaging). Compared to probably more known ICQ, jabber is an open protocol, so it doesn't depend on single company, its end user agreenments and accessibility of their servers. Another advantage is the possibility transports, through which you can use your jabber account to communicate with users of other IM protocols.

More information you can find here, comparison of the available clients you can find here

How can I communicate with users of other IM protocols? 

Currently supported transports are icq and irc. 

At this moment, two transport for ICQ protocol are available, please use the Spectrum ICQ transport (im.jabber.ics.muni.cz), because PyICQt (icq.jabber.ics.muni.cz) is deprecated and migration to only Spectrum ICQ transport is about to happen, soon.

Unrecognized server certificate error while trying to connect

If your client software is unable to verify a certificate of our servers (not the same as the certificate change error!), verify that you have certificate of Terena organisation between trusted ones for your client (if not, you can download it here).


If you have any questions/comments, contact us on this address.