Mail command fails to send mail

[gihrig]

The Linux mail command does not send mail.

echo "test email" | mail -s"test subject" [email protected]

Returns the command prompt without error.

Sending and reciveing email through pop and smtp works fine.

PHP's mail command works fine.

There are no entries in /var/log/maillog (the file is empty) or any of it's rotations.

There are no entries generated in /var/log/messaeges when I attempt to send using the mail command.

Running Fedora core 2, Plesk 7.5.2 w/ qmail.

Any ideas or direction on where to look next in troubleshooting this issue would be most appreciated.

Regards,

-Glen