Thanks to those who replied. Most useful help came from http://www.debian-administration.org/articles/141. It seems that with exim 4.50 neither SA-exim nor exiscan nor anything else are required for transport. Fetchmail delivers by smtp to exim4 which puts the mail in /var/mail/<username>. exim4-daemon-heavy, clamav-daemon and the configuration of exim4 are all that is required for screening and transport.
N.B. if exim4 is installed using a single configuration file then the configuration changes described in the above reference to invoke AV scanning have to be made in the relevant sections of /etc/exim4/exin4.conf.template and not in the separate files contained in /etc/exim4/conf.d/xxxx Thanks folks. Charles -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
