Nearlly everything works on my little Lamp server using FC5.
But when I try to use mail from a php script it never gets to the end user.
I get a mail at the terminal telling me that there are issues but I don't understand the message.
" ----- Transcript of session follows -----
<original email address here>... Deferred: Name server: yahoo.com.: host
name lookup failure
Warning: message still undelivered after 4 hours
Will keep trying until message is 5 days old"
How do I solve this?
Do I need to switch something on/off?