Hi. I've set up PHP, MySql, Apache and PHPMyAdmin running on Windows XP Home Edition. Everything works fine and allows me to test my PHP sites before uploading to the server. But I cannot test anything that requires e-mail sending. I continually get an error such as:

Warning: mail(): "sendmail_from" not set in php.ini or custom "From:" header missing in c:\Program Files\Apache Group\Apache2\htdocs\PHP_Mailing_List2\user_transa ct.php on line 78

Warning: Cannot modify header information - headers already sent by (output started at c:\Program Files\Apache Group\Apache2\htdocs\PHP_Mailing_List2\user_transa ct.php:78) in c:\Program Files\Apache Group\Apache2\htdocs\PHP_Mailing_List2\user_transa ct.php on line 136

I HAVE set up the sendmail_from in php.ini.

Is it possible to set up an e-mail relay offline or will I have to keep uploading files to a remote server to test the e-mail sending? It's a real pain because I have to keep changing the Config file seetings each time I upload.

Update:

I copied the php.ini file to my C:/php folder. Now I get an error message:

Warning: mail(): Failed to connect to mailserver at "localhost" port 25, verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set() in c:\Program Files\Apache Group\Apache2\htdocs\PHP_Mailing_List2\user_transa ct.php on line 78

I've searched in the php.ini file and can see no reference to smtp_port. I've set the Mail setings as:

[mail function]
; For Win32 only.
SMTP = localhost

; For Win32 only.
sendmail_from = ****@**********

I'm not sure how you do what it is suggested, ie. "or use ini_set() in c:\Program Files\Apache Group\Apache2\htdocs\PHP_Mailing_List2\user_transa ct.php on line 78". How do I do that?

But really what I want to do is get my Development Server properly set up so that I can just get on with testing each application as it it without having to modify the code. Thanks.