Replying to private messages

I've tried several times today to send replies to private messages, and each time I get this message went I hit the submit button:

Ran into problems sending Mail. Response: 535 Error: authentication failed

The replies do show up in my outbox, but not my sent box, so I gather they are not being sent.

Any help would be appreciated.

We have noticed that this message also shows up when you post.
Admin is working on it.

Should be ok now, Admin have worked their magic. ;)

thank you kindly :mrgreen: