There are some problems with s2s implementation in the Tigase that sometimes it loses ability to establish connections for some vhosts while s2s works for some others. Or it works for one vhost to one remote domain, while it does not work for the same vhost with another domain.

This is rather larger task to understand the current code and catch the issue when it exists. You can use both tigase.org and tigase.im installation to track the problem down. Bartek usually reports when he has problems with communication with a remote domain.

Please everybody cooperate on this problem.