PHP 4.0 Bug #8081: mail function fails (returns undef)

From: aksuska@webflyer.com Operating system: Solaris 2.6 PHP version: 4.0.3pl1 PHP Bug Type: *Mail Related Bug description: mail function fails (returns undef) test Script: <?php $test_var = mail( "aksuska@webflyer.com", "Hi does this work?", "It is if you see this!" ); print "The result is: $test_var"; ?> No mail is sent, no error reported ($test_var is empty), nothing in syslogs. I also tried: <?php $fp = popen('/usr/sbin/sendmail -t', 'w'); if($fp) { fputs($fp, "To: aksuska@webflyer.com\n"); fputs($fp, "Subject: test\n\n"); fputs($fp, "Test of PHP manual mailer"); fputs($fp, "\n"); pclose($fp); print "The result is: $test_var"; } else { print "Can't open sendmail!"; } ?> Which does not print the error message "can't open" nor sends an email (nothing in syslogs). Sendmail is indeed working, and works without error in Perl: open MAIL, "| /usr/lib/sendmail -t" # etc. BTW, I have the exact same problem on my LinuxPPC (basically RH) machine. Please help. Had no problem with earlier versions (last was 4.01pl2, I believe), just started when installed 403pl1. Location of sendmail: /usr/lib/sendmail sendmail_path (php.ini): /usr/lib/ Configure: --with-apxs=/site/apache/bin/apxs --with-config-file-path=/site/etc --enable-magic-quotes --with-dbase --with-gdbm=/usr/local --with-mysql=/usr/local --with-gd=/usr/local --with-jpeg-dir=/usr/local --with-ttf=/usr/local --enable-calendar --enable-memory-limit --enable-trans-sid --enable-bcmath --with-mcrypt --with-mhash --with-zlib --with-ftp --enable-wddx --enable-ftp -- Edit Bug report at: http://bugs.php.net/?id=8081&edit=1