Are any email functions working? If so, you will need to view the mail logs on the server to see what happened to those emails. Once vB sends it to PHP it's in the hands of the server. If you are on a shared server you may need to ask your host to look through the logs for you.
For what it's worth I get a lot of bounced emails from people who's mail boxes are full, 'unavailable' or over quota. This is a particular problem with hotmail and yahoo accounts. Unless you are on a dedicated server and can set where these bounce messages go, you will never see them. The mail logs will have a record of these though.
|