I don' know if it is the same bug, but I can confirm that kopete can't connect to gmx.net in todays debian lenny version:
Qt: 3.3.8b KDE: 3.5.10 Kopete: 0.12.7
and the version shipped today in KDE4 4.1.4 (Lenny backports)
I can connect to gmx.net with Pidgin 2.4.3 and to jabber.ccc.de with both kopete versions.
I don' know if it is the same bug, but I can confirm that kopete can't connect to gmx.net in todays debian lenny version:
Qt: 3.3.8b
KDE: 3.5.10
Kopete: 0.12.7
and the version shipped today in KDE4 4.1.4 (Lenny backports)
I can connect to gmx.net with Pidgin 2.4.3 and to jabber.ccc.de with both kopete versions.