I use Exim on several systems that handle multiple domains (5-15) and about 50-150 users it goes through a considerable amount of mail (I'll dig up some specs if anyone is interested) and have never really had a problem.
I have had a few test installs doing LDAP lookups for authentication etc. I have found it flexible and easy to configure. ---Gareth Walters -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
