Please use secure StartTLS conection.
We disable XMPP in-band registration due to it's may become spammer hotbed. Now we accept web resistration only.
Enable Carbon copy feature(XEP-0280)
Enable pubsub and user tune.
We often receive mail that "I forgot password".
But we couldn't recovery user account due to we can't verify identification.
Now, you can register email address for password recovery.
We recommend register your email address If you are forgetful.
Of course, We never use the your email address except for password recovery purposes.
You can control your account via web.
XMPP.JP became perfect HTTPS Site.
No one access http insecure site.
Our XMPP server disabled SSLv3 and some weak ciphers.
This server became the highest grade security.
See xmpp.net score
This server had issue that delay communication with other jabber server such as jabber.org.
Today, this issue was fixed!
Now our Web-based XMPP client support HTTPS.https://www.xmpp.jp/client/