Sendmail doesn't send mail to outside my domain

I use sendmail to send mails. I am not able to send mail to domains other than mine . i.e if I try sending a mail to yahoo account , it doesn't go but it can recieve from yahoo domain. I am very new to all these and I don';t know how can I make it work. This is very improtant to me as I have a webserver running and I need to send mails to lot of people in other domains regularly. I was always assuming that my mails are reaching them but recently got to know it's not. Please help me.
AchiveeAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

shivsaCommented:
what Opearting system u are using.
0
shivsaCommented:
do u have relay server.
This is for Linux.
----------------------
if yes then u can add relay ip address to

add ip addresses to /etc/mail/access
Just insert a new line such as:

xxx.xxx.x.xxx  RELAY  (to relay from one machine)
or
xxx.xxx.x  RELAY (to relay from the whole subnet)
0
AchiveeAuthor Commented:
I am using MAndrake Linux 9.1 and I don't know anything about relay server. I am very new to this field. Kindly help me configuring this.
I use kmail for other purposes and it uses smtp to send mails on the port 25 and if I send throguh this, mails are recieved at the other end in my case  recieve at yahoo account
If I use sendmail through commandline and give
sendmail sv_veena@yahoo.com
I don't recieve any
0
Determine the Perfect Price for Your IT Services

Do you wonder if your IT business is truly profitable or if you should raise your prices? Learn how to calculate your overhead burden with our free interactive tool and use it to determine the right price for your IT services. Download your free eBook now!

AchiveeAuthor Commented:
My /etc/mail/access file has below lines.
# by default we allow relaying from localhost...
localhost.localdomain       RELAY
localhost           RELAY
127.0.0.1           RELAY


Does this help
0
shivsaCommented:
edit your sendmail.cf

# "Smart" relay host (may be null)
DS

edit it to:
# "Smart" relay host (may be null)
DSmail.your-provider.domain
0
shivsaCommented:
whereby mail.your-provider.domain is the smtp-host you normally use when sending email directly out of an e-mail client.

after editing just restart sendmail and everything should be fine...
0
bhagyeshtCommented:
set the relay to your smtp host so that all emails not in your domain can be relayed to the net
0
AchiveeAuthor Commented:
Thank you very much Shiv
It's working now. DS was null initially.
0
bhagyeshtCommented:
great! now can you please accept shiv's answer and close the question.
0
shivsaCommented:
Good to know you got the issue resolved. You can close the question by following this guidelines:

http://www.experts-exchange.com/help.jsp#hs5
0
shivsaCommented:
the question is answered.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Programming

From novice to tech pro — start learning today.