Hi Michael, > found the reason. I had rightid="muc.XXX.de" in my client config. The > logs do not show that the gateway ID is quoted. After removing the > quotes the connection came up.
The quotes do not matter, unless they are some kind of typographic quotes like “ = U+201C or ” = U+201D (i.e. not " = U+0022). However, you'd see that in the log (as ???). So it's more likely you had a typo in the XXX part of that identity. Regards, Tobias