I recently saw Exim reject/not deliver mail based on this old, expired draft: http://tools.ietf.org/html/draft-delany-nullmx-00
What ever became of that one? -- Ralf Hildebrandt Geschäftsbereich IT | Abteilung Netzwerk Charité - Universitätsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebra...@charite.de | http://www.charite.de