In case you think that greylisting might have some disadvantages but give you also some benefits, you probably have thought about to use greylisting with some conditions. For example if you checked some parameters of the mail and you (or better your mailsystem) guess it may be spam, greylisting could…
Today I was crawling through my mail logs for various reasons. I was really surprised, that I saw a mail to a dedicated mailaddress which I'm using for communication with performancing.com. I was short checking, if this mailaddress is anywhere published at performancing.com, but couldn't find anything. A…
With policyd-weight you are able to reject mails before the body is received by your MTA, here postfix. No bounce mails, less wasted bandwidth and cpu time. policyd-weight scores characteristics of the mail positive or negative, is a defined value reached, it got rejected. The scores are currently: DNSBLs/RHSBLs…
Today I got some hints how to use different Access Policy Delegation with postfix. This it opens the possibility to use different check_policy_service in dependency on sender address, client ip ... and so on. Create aliases for groups of access restrictions in /etc/postfix/main.cf: smtpd_restriction_classes…
This article covers the installation of FuzzyOcr on Debian sarge including update to packages from backports.org. For informations how to install packages from bpo see here! Update spamassassin: # aptitude -t sarge-backports install spamassassin Keep in mind, that there are essential changes in configuration, so you need to check it…