I just notice that my mails can send to any domain except my own local domain that is certifyexpress.com

My server specs is Pentium III 800Mhz, 512MB RAM, RedHat 7.1, Plesk Admin 2.0.

My sendmail path is /usr/sbin/sendmail

So below is what I've done in php.ini. Result = All mails won't even send out to any domain.


; For Win32 only.
; SMTP = localhost

; For Win32 only.
; sendmail_from = me@localhost.com

; For Unix only. You may supply arguments as well (default: 'sendmail -t -i').
sendmail_path = /usr/sbin/sendmail


Then i try this. Result = Same as above.


; For Win32 only.
SMTP = localhost

; For Win32 only.
sendmail_from = me@localhost.com

; For Unix only. You may supply arguments as well (default: 'sendmail -t -i').
sendmail_path = /usr/sbin/sendmail


Then I rechange it back to the default. Result = All mails succesfully send to external domains except internal domain certifyexpress.com


; For Win32 only.
SMTP = localhost

; For Win32 only.
sendmail_from = me@localhost.com

; For Unix only. You may supply arguments as well (default: 'sendmail -t -i').
; sendmail_path = /usr/sbin/sendmail

have you tried

sendmail_path = /usr/sbin/sendmail -t -i

?

remember to restart apache when you finish editing php.ini ;)

Ok I'll try sendmail_path = /usr/sbin/sendmail -t -i

but should I enable the the Win32 Only option too or should I remark it?