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PHP piping mail to sendmail quickly

 
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Old 03-11-2006
PHP piping mail to sendmail quickly
In order to prevent any php processes on our web server from waiting
for sendmail hangups (name resolution issues, etc), we wrap sendmail
in a simple shell script and push it to the background and disown the
process so that any php script on our site can continue on processing
code and not have to wait for sendmail to return.

So, in php.ini we have the following setting:

sendmail_path = "/usr/local/bin/phpsendmail.sh -t -i"

and in phpsendmail.sh we have the following:

#!/bin/bash
cat /dev/stdin | /usr/bin/sendmail "$@" &


The problem we are encountering is that it seems to take quite a while
(in computer time) for a lengthy (50K) text email to actually get
piped into sendmail this way. When a script pushes out 20 emails of
this size, we are seeing it take approximately 20-25 seconds. We have
some background processes that send need to send batched email from a
database table (for immediate delivery, not queued) and we would like
to speed the process up, while still using this concept of pushing
each sendmail process out to the background. What can we do to speed
up the process of piping this information through the wrapper script
and into the sendmail process?

Thanks in advance for any advice....

GM
 
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LEARN ABOUT FREEBSD

rc.sendmail

RC.SENDMAIL(8)						    BSD System Manager's Manual 					    RC.SENDMAIL(8)

NAME

     rc.sendmail -- sendmail(8) startup script

DESCRIPTION

     The rc.sendmail script is used by /etc/rc at boot time to start sendmail(8).  It is meant to be sendmail(8) specific and not a generic script
     for all MTAs.  It is only called by /etc/rc if the rc.conf(5) mta_start_script variable is set to /etc/rc.sendmail.

     The rc.sendmail script can take an optional argument specifying the action to perform.  The available actions are:

     start	   Starts both the MTA and the MSP queue runner.

     stop	   Stops both the MTA and the MSP queue runner.

     restart	   Restarts both the MTA and the MSP queue runner.

     start-mta	   Starts just the MTA.

     stop-mta	   Stops just the MTA.

     restart-mta   Restarts just the MTA.

     start-mspq    Starts just the MSP queue runner.

     stop-mspq	   Stops just the MSP queue runner.

     restart-mspq  Restarts just the MSP queue runner.

     If no action is specified, start is assumed.

     The rc.sendmail script is also used by /etc/mail/Makefile to enable the Makefile's start, stop, and restart targets.

RC.CONF VARIABLES
     The following variables affect the behavior of rc.sendmail.  They are defined in /etc/defaults/rc.conf and can be changed in /etc/rc.conf.

     sendmail_enable
	     (str) If set to ``YES'', run the sendmail(8) daemon at system boot time.  If set to ``NO'', do not run a sendmail(8) daemon to listen
	     for incoming network mail.  This does not preclude a sendmail(8) daemon listening on the SMTP port of the loopback interface.  The
	     ``NONE'' option is deprecated and should not be used.  It will be removed in a future release.

     sendmail_cert_create
	     (str) If sendmail_enable is set to ``YES'', create a signed certificate /etc/mail/certs/host.cert representing
	     /etc/mail/certs/host.key by the CA certificate in /etc/mail/certs/cacert.pem.  This will enable connecting hosts to negotiate START-
	     TLS allowing incoming email to be encrypted in transit.  sendmail(8) needs to be configured to use these generated files.	The
	     default configuration in /etc/mail/freebsd.mc has the required options in it.

     sendmail_cert_cn
	     (str) If sendmail_enable is set to ``YES'' and sendmail_cert_create is set to ``YES'', this is the Common Name (CN) of the certifi-
	     cate that will be created.  If sendmail_cert_cn is not set, the system's hostname will be used.  If there is no hostname set,
	     ``amnesiac'' will be used.

     sendmail_flags
	     (str) If sendmail_enable is set to ``YES'', these are the flags to pass to the sendmail(8) daemon.

     sendmail_submit_enable
	     (bool) If set to ``YES'' and sendmail_enable is set to ``NO'', run sendmail(8) using sendmail_submit_flags instead of sendmail_flags.
	     This is intended to allow local mail submission via a localhost-only listening SMTP service required for running sendmail(8) as a
	     non-set-user-ID binary.  Note that this does not work inside jail(2) systems, as jails do not allow binding to just the localhost
	     interface.

     sendmail_submit_flags
	     (str) If sendmail_enable is set to ``NO'' and sendmail_submit_enable is set to ``YES'', these are the flags to pass to the
	     sendmail(8) daemon.

     sendmail_outbound_enable
	     (bool) If set to ``YES'' and both sendmail_enable and sendmail_submit_enable are set to ``NO'', run sendmail(8) using
	     sendmail_outbound_flags instead of sendmail_flags.  This is intended to allow local mail queue management for systems that do not
	     offer a listening SMTP service.

     sendmail_outbound_flags
	     (str) If both sendmail_enable and sendmail_submit_enable are set to ``NO'' and sendmail_outbound_enable is set to ``YES'', these are
	     the flags to pass to the sendmail(8) daemon.

     sendmail_msp_queue_enable
	     (bool) If set to ``YES'', start a client (MSP) queue runner sendmail(8) daemon at system boot time.  As of sendmail 8.12, a separate
	     queue is used for command line submissions.  The client queue runner ensures that nothing is left behind in the submission queue.

     sendmail_msp_queue_flags
	     (str) If sendmail_msp_queue_enable is set to ``YES'', these are the flags to pass to the sendmail(8) daemon.

     These variables are used to determine how the sendmail(8) daemons are started:

	   # MTA
	   if (${sendmail_enable} == NONE)
		   # Do nothing
	   else if (${sendmail_enable} == YES)
		   start sendmail with ${sendmail_flags}
	   else if (${sendmail_submit_enable} == YES)
		   start sendmail with ${sendmail_submit_flags}
	   else if (${sendmail_outbound_enable} == YES)
		   start sendmail with ${sendmail_outbound_flags}
	   endif

	   # MSP Queue Runner
	   if (${sendmail_enable} != NONE &&
	       [ -r /etc/mail/submit.cf] &&
	       ${sendmail_msp_queue_enable} == YES)
		   start sendmail with ${sendmail_msp_queue_flags}
	   endif

     To completely prevent any sendmail(8) daemons from starting, you must set the following variables in /etc/rc.conf:

	   sendmail_enable="NO"
	   sendmail_submit_enable="NO"
	   sendmail_outbound_enable="NO"
	   sendmail_msp_queue_enable="NO"

SEE ALSO

     rc.conf(5), rc(8), sendmail(8)

HISTORY

     The rc.sendmail file appeared in FreeBSD 4.6.

BSD
								 October 19, 2013							       BSD