Plesk: spamdyke POP-Before-SMTP qmail (english)
After installing spamdyke in Plesk POP-before-SMTP wasn’t properly working anymore. I googled for help, but all I could find simply stated
this is not possible anymore and
it’s bad anyhow, which isn’t much of a help when you have to find a solution. So we kept looking…
Plesk (or rather relaylock) saves IPs which are supposed to be authentificated by POP-before-SMTP in the table smtp_poplocks of the psa database. The following Perl script reads from this table and creates a list, which then can be used as an ip-white-list for spamdyke.
I decided to use a cronjob instead of a perl deamon since it’s very unlikely that a user is trying to send an email without SMTP auth in less than 59 seconds after establishing the POP3 connection.
# Download and check the script wget "URL from end of this post" chmod 700 spamdyke-pop-before-smtp* nano spamdyke-pop-before-smtp* # for debian users apt-get install liblog-log4perl-perl # for user of any other distribution perl -MCPAN -e shell install Log::Log4perl # open /your/path/to/spamdyke.conf and add the following lines ip-whitelist-file=/var/qmail/spamdyke/pop-before-smtp # prepare the cronjob via "crontab -e" * * * * * /your/path/to/the-script.pl
Every sixty seconds the script is started. It then reads the database, writes the whitelist
/var/qmail/spamdyke/pop-before-smtp and afterwards POP-before-SMTP is working like a charm again.
In case of an error the output will be logged in a file named
/var/log/pop-before-smtp.log. If you want to receive an additional email as root, simply comment out the line
open STDERR, ‘>/dev/null’; (provided that your cron deamon was set up accordingly).
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