It's not an PHP problem. Your mailserver doesn't allow relaying, it only 
allows you to send emails to accounts that exist in the mailserver.

> -----Ursprungligt meddelande-----
> Fr=E5n: senthil_T_kumar@l... [mailto:senthil_T_kumar@l...]
> Skickat: den 21 februari 2003 21:36
> Till: professional php
> =C4mne: [pro_php] Problem with mail() argosoft mailserver
>
>
> Hi,
>
> I use apache/php4.3 on windows. I downloaded argosoft mail
> server to use
> with mail() function. But when I tried using mail() it says the
> waring 'SMTP server response: 550 User not local'. ( i was
> connected to
> the internet) Anyone know how to solve this problem.
>
> This the configuration I have in my php.ini
>
> ; For Win32 only.
> SMTP =3D localhost
>
> ; For Win32 only.
> sendmail_from =3D me@l...
>
> I did not change anything in argosoft mail sever options.
>
> Thank you
> senthil
>
>
>