Hi All

I have created log in system . In that when the user completes the
registration process an auto reply(auto-reply@domain) will generate and
sent this to users email id regarding about the user name and password (Lo
gin Details). After formal approval from the admin the user will get a
user activation mail with log in link.

But , my problem is these are work only for mail accounts from my domain
only(test@domain). its not send any of above mentioned details to other
mail services like gmail or yahoo etc.

i discussed this with some others, they said its the problem with your
mail function configuration. but i didn't get any needful information as
am a beginner in PHP scripting.

i have contacted this with my hosting service they said its the problem
with php mail () function and use php mailer() instead mail().
am attaching my code along with this..
please give me a solution for the same..

I would contact your host. Sounds like the mail server may need authentication or the server is not set up to send mail externally.

PHP mail() is notorious for getting spam filtered. Do a search for php+mail+spam to find ways around that. The best option for high deliverability, of course, is to go with SMTP (e.g. using the PEAR SMTP library), but that will require more research and work for you to integrate.