Not receiving emails on yahoo or hotmail or gmail

[501205680]

Hi,

I have a RedHat Linux box - Red Hat Enterprise Linux AS release 3 and have a monitoring application installed on the box.

The application sends alerts to my local domain ids' . e.g : username@test.com.

The problem is I do not get alerts on yahoo or gmail or hotmail account.

I have checked the sendmail.cf and seems to be OK.

The maillog file looks like this when sending email using sendmail -v -s commands to the username@yahoo.com id.

Apr 6 12:59:10 HOSTNAME sendmail[31882]: l36Gx9eO031882: to=username@yahoo.com, ctladdr=root (0/0), delay=00:00:01, xdelay=00:00:01, mailer=relay, pri=33218, relay=mailrelay.DOMAIN.com [xx.xx.xx.xx], dsn=2.0.0, stat=Sent ( <200704061659.l36Gx9eO031882@HOSTNAME.DOMAIN.com > Queued mail for delivery).


I understand that when I send a test mail from the box .. I get email on my local id and the sender name is root@servername.domain.com .. and actually it should come from a valid account id .. like alerts@domain.com. The root@servername.domain.com is getting lost in the Interent cloud as invalid and hence cannot get emails on outside domains.


PLEASE HELP ..NEED URGENT HELP.