I've been tweaking the options for spamd in an attempt to both prevent spam to my network and up the pain levels to the spammers.
In particular, grey-trapping works very well indeed and appears to cut out a good deal of spam. I use the "-n" switch to spamd to change the default banner to a sendmail-like one. That appears to prevent early disconnects from semi-intelligent mailers. I use the "-s" switch to set a delay to 9 seconds. This appears to work well. Has anyone any experience of using even longer delays. Is it worth it? Any other tips for using spamd to reduce spam and making life difficult for the spammers? Tim
