On Monday 19 September 2011 17:06:22 john wrote: > I am running Ubuntu 11.04 as a SOHO server with > postfix/dovecot/Amavis-new/Spamassassin/Clamav setup as my email > service. > > I currently use header and body checks in postfix as part of my > anti-spam measures. > How useful and/or how effective are these measures?
Not. > Are they still worthwhile if I am using the > Amavis-new/Spamassassin/Clamav setup for anti-spam? postscreen(8), and smtpd(8) restrictions, comprise a safer and more effective first line of defense, which is also far less resource intensive. http://www.postfix.org/POSTSCREEN_README.html http://www.postfix.org/SMTPD_ACCESS_README.html http://jimsun.linxnet.com/misc/postfix-anti-UCE.txt And a more general discussion of spam control: http://www.spamhaus.org/whitepapers/effective_filtering.html > The check files were originally from a third party (Jeff Posluns ?) > and are fairly old, I have added some of my own checks but the > basic files are originals. If these checks are still worthwhile > are there more up to date files, and if so where might they be > found? -- Offlist mail to this address is discarded unless "/dev/rob0" or "not-spam" is in Subject: header
