Error sending email using PHP mail() on Mac OS X [closed]

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I used to be able to send email using the simple mail() in PHP although since I have upgraded to the latest PHP I am unable to send emails.

When I look at the email log I get the following:

Jun 29 21:14:49 Johns-MacBook postfix/pickup[26503]: 384B6246803: uid=70 from=<_www>
Jun 29 21:14:49 Johns-MacBook postfix/master[26709]: fatal: open lock file pid/master.pid: unable to set exclusive lock: Resource temporarily unavailable
Jun 29 21:14:49 Johns-MacBook postfix/cleanup[26680]: 384B6246803: message-id=<20110629201449.384B6246803@example.com>
Jun 29 21:14:49 Johns-MacBook postfix/qmgr[26504]: 384B6246803: from=<_www@example.com>, size=351, nrcpt=1 (queue active)
Jun 29 21:14:49 Johns-MacBook postfix/local[26683]: 384B6246803: to=<ben@example.com>, relay=local, delay=0.02, delays=0.01/0/0/0, dsn=5.1.1, status=bounced (unknown user: "ben")
Jun 29 21:14:49 Johns-MacBook postfix/cleanup[26680]: 3C318246805: message-id=<20110629201449.3C318246805@example.com>
Jun 29 21:14:49 Johns-MacBook postfix/qmgr[26504]: 3C318246805: from=<>, size=2033, nrcpt=1 (queue active)
Jun 29 21:14:49 Johns-MacBook postfix/bounce[26684]: 384B6246803开发者_如何学C: sender non-delivery notification: 3C318246805
Jun 29 21:14:49 Johns-MacBook postfix/qmgr[26504]: 384B6246803: removed
Jun 29 21:14:49 Johns-MacBook postfix/local[26683]: 3C318246805: to=<_www@example.com>, relay=local, delay=0, delays=0/0/0/0, dsn=2.0.0, status=sent (delivered to mailbox)
Jun 29 21:14:49 Johns-MacBook postfix/qmgr[26504]: 3C318246805: removed

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To fix the fatal: open lock file pid/master.pid: unable to set exclusive lock: Resource temporarily unavailable problem:

Have a look at your php.ini file and make sure that you can see this line:

sendmail_path = sendmail -t -i

or

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

It shouldn't have any quotes around it and that there is not semi-colon (;) before it. If it's not there or different, change it to match one of the line above.

If that doesn't help, have a look at http://switch.richard5.net/2006/08/19/fatal-open-lock-file-pidmasterpid/ and see if that helps. Since you've updated PHP, I doubt that postfix is the problem but you never know.

Also:

You may have postfix configuration issues. It's trying to deliver using the local relay. If the e-mail your trying to send to isn't one on the local server, you might want to check your /etc/mailnames and in /etc/postfix/main.cf check myhostname, mydomain and myorigin.

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Set your relayhost

sudo postconf -e relayhost=<your-isp’s-smtp-server>