Email Problem with User Name

The username appended to the front is correct.

The problem sounds like this user has an incorrect email address, the email account no-longer exsists, or they have put in an incorrect or badly formatted email address.

The returned email will probally give you the reason why the email has bounced.

The fact that the email is bounced is not the fault of the forum code as their is no way of checking of the email address is OK.

The best thing you can do is to either edit the members profile and remove the email address, or through the editing of the members profile delete any email subscriptions they have.

But bounced emails are common, this site gets 100's, so I would suggest not having a catch all email account for the forums email address domain.

Some email components can use <> to indicate the name in an email.

It could be this that is coursing the problem.

Future versions of the forum will have checks done so certain characters  co not be used.