problem sendig manil relaying prohibited

[J_-]

when i use the mail() function to send an e-mail to an adress outside of my domain (i.e. hotmail, yahoo, cablered.net.mx, etc) i get this:

Warning: mail() [function.mail]: SMTP server response: 550 Relaying is prohibited

this is (obviously) in a php script, i am running windows 98 and have microsoft personal web server and exchange

the source e-mail adress and smtp server are correctly configured in php.ini

i read somewhere that it´s because my server won´t allow "3rd" party e-mails to be sent, is this the cause? how can i solve this?

thank you all in advance...

[cmburns69]

This error is because you look like a "3rd party" person to your email server. The mail server on my site is fairly tightly locked down, and whenever ATT broadband changes my IP address I start getting this error until I change the IP its configured to accept.

You might have to contact your ISP and see what they can do, also, more information about where the mail server you're connecting to is (localhost, not localhost, etc) and if your php script is running on your local computer or on some hosting site would be useful...

Tom Brown
Netnexus: Where gamers play
http://www.netnexus.com

[J_-]

i get this error in my office, where i´m doing some php stuff for the web site

the mail server is not localhost, it´s the office mail server, i´m running the php script in my office computer