I am using Fedora core -2. Can't I use "mail" command to send mails to a user in yahoo.com"
My "sendmail" service is running, But I have not configured it any way After Linux was installed.
I ( as a root) tried to send a mail to a "yahoo" user , but delivery failure messages came to my mail box in linux saying
" ----- The following addresses had permanent fatal errors -----
451 yahoo.com: Name server timeout
Message could not be delivered for 5 days
Message will be deleted from queue "
What to do????????????