We've been using milter-greylist: http://hcpnet.free.fr/milter-greylist/ ftp://ftp.espci.fr/pub/milter-greylist/ for almost a year now and it works great. I looked over a number of other options and I believe this was the only one that was a compiled executable. I think all the other ones I found were scripts and I wanted something faster. -- Brent L. Bates (UNIX Sys. Admin.) M.S. 912 Phone:(757) 865-1400, x204 NASA Langley Research Center FAX:(757) 865-8177 Hampton, Virginia 23681-0001 Email: B.L.BATES at larc.nasa.gov http://www.vigyan.com/~blbates/