Server Performance Tips? Recommended Mail Transfer Agent?

[itweb]

Hi,

we are running a dedicated server with:
* Red Hat 9
* php
* mysql
* zend optimizer
* postfix mailer

It is a pentium 4 3.0ghz with 2gigs of ram and it is only used for phplist. We are only getting about 5,000 emails/hour which seems too slow right now.

Does anyone have performance or tuning tips for running phplist? Please put all your server tips here.

[dwh]

http://www.postfix.org/TUNING_README.html

[H2B2]

Tweaking the throttle in microseconds (by Gram): http://www.phplist.com/forums/viewtopic.php?t=5444

[darkdante]

hi,

the link for the article by gram isn´t online, can someone please provide me with the right link?

thx,
dd

[H2B2]

can someone please provide me with the right link?

It is the right link, but unfortunately the thread seems to have been deleted. A shame really, as it was a useful mod.

As an alternative you could use jotazzu's mod for throttling with fractional values. I'll paste his post here, just in case that thread gets deleted too:

Add to .../phpList/config/config.php:

Code: Select all

# Throttle sending messages; indicates the number of seconds to pause
# between each message (fractions are allowed, e.g. 0.3)
define("MAILQUEUE_PROCESSING_THROTTLE",0.5);


Add to .../phpList/admin/processqueue.php
Find the following at about line 420:

Code: Select all

$status = Sql_query("update {$tables['message']} set processed = processed +1 where id = $messageid");


Insert after this line:

Code: Select all

usleep((MAILQUEUE_PROCESSING_THROTTLE)*1000000);

[karen66]

Thank you for proving an alternative, very helpful

[Speetmail]

a good way is to use SSD drives.
it speet up the mysql. turnoff phplistś stats (links / opens rate and so on) it slow the system now so munch.

postfix move the Spool over to the SSD to.

it will help perfomes so munch BUT. rember if you only use one ip to sent out on.
it can sent to fast and you will get block. so rember to set the limit in postfix.
but of you setup nomal it will run 25-50k pr hour.

i have limit my system to run 105.000k pr hour (in phplist) do not work
whe 860 ipś whe a dns loadbalance
but in postfix i have put in one mail to one ip and go on to the next smtp to it is complet hotmail /yahoo / gmail there is a delay on 0,6 sec each mx
so it not sending to fast.

i hop it can help you.
if you need more help just ask.

[CS2]

PHPlist is poorly optimized for sending large volumes of email. The link tracking is one huge issue. Also, if you send emails containing large amounts of text, you will be slowed by the sendEmail function which uses a very large number of ereg* functions (which have been deprecated for years) where stripos() and str_ireplace() would be just as functional and orders of magnitude faster (I have changed this in my own installations and have tested the performance increase).