Problem:
When using Horde pages are not shown properly and in the apache error log you can find errors like that:
zend_mm_heap corrupted
Solution:
Seems that there has been a well known bug within PHP around for some years already (see http://bugs.php.net/bug.php?id=40479
Add following line in your Apache start up script (e.g. /etc/init.d/httpd)
export USE_ZEND_ALLOC=0
Problem:
Your shared server is misused for spamming using some php script. Since there are hundreds of websites or domains on your server it is not easy to find out which domain or which script the culprit is.
Solution:
Write a wrapper script:
Find the active sendmail “path” in php.ini:
grep sendmail_path /etc/php.ini
This is usually something like:
sendmail_path = /usr/sbin/sendmail -t -i
Write a new shell script /usr/local/sbin/sendmail_php.sh:
#!/bin/bash
logger php_mail: dir=${PWD}
/usr/sbin/sendmail -t -i $*
Change /etc/php.ini accordingly:
sendmail_path = /usr/local/sbin/sendmail_php.sh
Restart your webserver.
Now when some php form is using mail() you will see following entry in your server logs:
May 3 11:29:58 www42 logger: php_mail: dir=/var/www/vhosts/example.com/httpdocs/guestbook
Problem:
Many CMS and Blogs need mod_rewrite. However the usual user is not able to debug the problem if the pre-configured .htaccess is not working as expected.
Solution:
Write a simple .htaccess to find out if mod_rewrite is even working for your root webdirectory: Create a file .htaccess with followig content:
RewriteEngine On
RewriteRule ^i1.html$ /i2.html
Create two more testfiles:
echo "1" >i1.html
echo "2" >i2.html
If you fire up your browser with
http://yourdomain/i1.html
and you see “1” mod_rewrite is not working. If you see “2” then mod_rewrite is working fine and you do not have to bugger your hoster to check if mod_rewrite ist doing its job 😉
Problem:
Since version 9.0.0 the max letter size to filter is hardcoded in the spam handler and cannot be changed easily [1]
Solution:
Write a wrapper script:
Rename /usr/bin/spamc to e.g. /usr/bin/spamc.org
mv /usr/bin/spamc /usr/bin/spamc.org
Write a new /usr/bin/spamc shell script:
#!/bin/bash
/usr/bin/spamc.org $* -s 512000
