Do I need to have a DNS SRV Record for OpenFire to work?

Wildfire runs fine even without DNS SRV records. It makes sense to use them to make sure that s2s-connection work fine, if you are using non-standard ports and if you want to use example.com as your web server and as your xmmp.domain using different servers.

Further documentation: http://jabberd.jabberstudio.org/2/docs/section05.html#5_7_1

What should I set my XMPP domain to?

Recommendation: Set this like your email domain. (to example.com) and use DNS SRV records to make sure that the xmpp clients connect to your Wildfire server and not to your web server.

You can set it of course to jabber.example.com for tests and also for a production but most users prefer one address (username@example.com) for email and chat.

How does Server-2-Server work?

It just works, as soon as a user "foo@example.org" sends a message to "foo@example.net" Wildfire establishes a s2s connection. See also d-1030.

I get an out of memory error, what should i do?

This means that the JVM could has used up all the memory that the server has to the extent of the allocated memory (basically, you need to set more memory). An interesting document on how to do this is describe in this document: d-1033

Only some applications are able to connect, How come?

This could possible be because not all ports are open, for a list of ports that need to be open you should either visit your Openfire's logged in admin page or view the list below to help recognise the ports better.

What ports does OpenFire use?

I can't login to my server, what's going on?

If you have changed the ports of your servers XMPP protocols then it might be best to enter that into the client, if you've made it so that they users have to connect with SSL then make sure that port 5223 is open (standard unless changed). If this seems to be unsuccessfull then perhaps it might be best to take a look at the Operating Systems firewall, there may be some unopen ports or some rules that are blocking traffic data to these ports.

I've just upgraded from 3.4.x to 3.5.0 and the control panel looks really bizzare, what happened?

More than likely your browser is using an outdated version of the images and style sheet, to overcome this problem, merely press F5 on your keyboard when faced with this page.

I've just updated a plugin and now it's not there/not working anymore, what should i do?

This can happen sometimes in OpenFire, the best thing to do here is to restart OpenFire, that should fix the issue and the plugin should start functioning once again with the new and updated version.

How to use special characters, such as the @ symbol in JabberIDs?

You need to escape some special characters, e.g. simply replace the @ symbol with \40. When using some special unicode characters (not listed here) it can lead into problems, if your database does not support them.