Christian, thank you kindly for the answer clarifying the difference between the postmaster filter and procmail. For the information of the readers of this list, it looks like there are a couple of webmin modules to handle the web-based editing of the procmail config / recipe file, and related items like the setup of clam antivirus and spamassassin antispam filters, which work with procmail. Webmin is of course a gui that helps you handle your system admin tasks, but I have used neither of those modules, personally. At any rate, fyi. Cheers, Rick -----Original Message----- From: Christian Schoepplein [mailto:christian.schoepplein@otrs.de] Sent: Tuesday, June 14, 2005 9:10 PM The differences are, that - procmail might be more flexible and powerfullt then the PostMasterFilter - the setup of procmail rules isn't possible via the webinterface - all PostMasterFilter rules are stored in the OTRS database, the procmail rules are only availabel in the filesystem It isn't easy to say, what is better, it just depends on your needs. If you want to run OTRS on Windows, you havent procmail and so you have to use the PostMasterFilter. If you want to store all filter rules in a database it would be better, if you use the PostMasterFilter, because the rules are available after updates e.g. If you want to create very compley rules, that can not be create via the PostMasterFilter and the web interface, you should use procmail.