Try sending a mail through command line manually. Than look at maillog maybe. # sendmail -t test@xxxxxxxxxxxxxx <<EOF > This is a test mail > EOF Aras Koktas manager@xxxxxxxxxx Business Excellence Development Phi.dot Internet Systems -----Original Message----- From: afan@xxxxxxxx [mailto:afan@xxxxxxxx] Sent: Friday, January 12, 2007 10:03 PM To: php-general@xxxxxxxxxxxxx Subject: what mail program I'm using? hi, a moth ago we (company I work for) moved to new hosting company. we have dedicated sles10/php5/mysq5/apache2 based server. before, sending confirmation emails to clients using mail() functin was working fine. now, many of emails we send don't reach to receiver. first, I'm asssuming, server is not configured corerctly. Though, in header of the email I go on my yahoo account said: Received: by slesvernon.site (Postfix, from userid 2) according php documentation (php.net/manual/en/ref.mail.php) php use by default sendmail. but if other program is selected it has to be specified. do I have to specify it in php code or in php.ini (nothin is specified about Postfix right now in my php.ini)? Also, can't find (but almost sure I saw it before) the line for send back if error, like we have for: From: name <name@xxxxxxxxx> CC: name <name@xxxxxxxxx> Reply-To: name@xxxxxxxxx Is it possible the get error back on specific email if email is not (for some reasons) delivered? Thanks for any help. -afan -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php