We currently use MailScanner/ClamAV/sendmail on our Gateway with three toasters running qmail/vpopmail calling SA from a script added to the users .qmail file. All Maildirs are NFS mounted as are qmail control files.
NFS 4 by chance? Do you have any opinions on its security and speed/performance?
Yes.
All of the mail servers, gateway, toasters, spool, are behind a reputable firewall. The interfaces which have NFS traffic are limited to the inside addresses. We have implemented other security procedures as well. ;^)
DAve
-- Systems Administrator http://www.tls.net Get rid of Unwanted Emails...get TLS Spam Blocker!