On Wed, 2011-08-03 at 12:28 -0400, John Hinton wrote: > So yes, what's a good mailserver setup which hopefully stays as close to > upstream as possible on 6.0? Exim www.exim.org I've been using it on 6 servers for almost 2 years replacing a Windoze mail server. Exim is a rock-steady reliable MTA (mail transfer agent) created by Cambridge University (England) but maintained, improved and developed by outsiders. It is very configurable. It is used by all the UK's police forces for outbound mail (unsure about inbound) and by the UK's National Health Service (same Cable & Wireless Contractor). Exim works with ClamAV, Spam Assassin, Mailman etc. etc. If interested, you can join the list https://lists.exim.org/mailman/listinfo/exim-users and ask questions. For those liking an easy stress-free life, I sincerely recommend Exim. However I am sure there are alternatives. Incidentally in Centos Exim is a "drop-in" replacement for Sendmail. yum remove sendmail yum install exim -- With best regards, Paul. England, EU.