Here goes sorry if this is somewhat hard to follow.
I have four companies using SME 6.0x servers.
1. Used as a front end to an old Exchange server.
Also used as an FTP repository.
Total inside users 20, outside ftp users approx 50.
Initally installed for security reasons with their Exchange server.
They're using spam and Clam from Jesper Knudsen.
100% happy with the implementation.
2,3. Server and gateway for two seperate businesses, each with one server/location.
They're using spam and Clam from Jesper Knudsen.
Mail Blocking from Dungog.
Using email, webmail, pptp, file, print, http, gateway.
One has 10 users, the other has 30.
100% happy with the implementation.
One was a new business with no network, the other was to replace an old Windows NT server that was unstable and needed inhouse email.
4. Server only at a company with 8 locations. Each site has its own SME server hosting email, webmail, file, print, http. There is also an IPCOP 1.3/1.4 server at each site for site to site IPSEC VPN's. The number of users range from 10 to 40.
Each individual server hosts their local email. I subdivided the domain name into locations, ie user@location.domain.com.
All servers have the same samba domain.
They're using spam and Clam from Jesper Knudsen.
Mail Blocking from Dungog.
Seperate SME server is used for PPTP access at primary location.
Hacked the scripts to modify printcap allowing me to send an overlay to our PCL printers for invoicing, purchase orders, etc.
All Dell Raid 5 servers with internal DLT tape drives.
Excellent uptime, very little administration.
Windows XP Pro workstations running Office XP/2003.
The two biggest issues are having an easy to use Outlook corporate address book and single sign-on.
I worked around the address book somewhat by adding a personal address book to outlook that is copied down, if changed, to the workstation when the user logs in.
Single sign-on is accomplished by setting up multiple users at each location for those who travel. (ugly)