ejabberd should work fine, it won't care. But you're right - whether apps will allow you to accept self-signed certificates can vary. Some are strict and don't

ejabberd should work fine, it won't care. But you're right - whether apps will allow you to accept self-signed certificates can vary. Some are strict and don't allow bypass, others may just issue a warning prompt that you can dismiss. I haven't personally tried aTalk.