I ran the commands and rebooted, but sherwood is still alive and well. I'm going to put the machine having the subnet problem on the same subnet as the SME server just to make sure the problem has nothing to do with something screwy in the machine itself. Rebooting the SME server didn't solve the subnet problem.
With regard to the VPN and hosts file, I'm using the direct numeric IP addresses in the outlook email configurations, so I don't think I've got any kind of DNS problem. It's not a routing problem either as I'm able to access the SME server and Horde web pages from the same machine.
Thanks for the info on Toltec. I do already have several folders for Outlook, one for the calendar, contacts, and Todo list, which is a local PST file for each copy of Outlook, and a number of shared IMAP folders, one for each email address I'm using. Is there any benefit to converting the email accounts back to POP3, putting them back in the local PST file, and then letting Toltec control the sharing between the copies of Outlook? I thought I saw a comment that said the new mail indicator wouldn't work with Toltec, and that issue already exists with IMAP under Outlook, although once in a while I get a new mail icon in the tray. I'm using a program I downloaded called IMAPNotify that sits in the tray and performs the notification function for IMAP email accounts.
P.S.
I'm seeing lots of the following messages in the message log since I installed CYRUS. Everything seems to be working, but even though I don't know exactly what these mean, I get the idea that something is broken:
Sep 19 00:12:31 srw-smeserver imap[3522]: sql_select option missing
Sep 19 00:12:31 srw-smeserver imap[3522]: auxpropfunc error no mechanism available
Sep 19 00:12:31 srw-smeserver imap[3522]: _sasl_plugin_load failed on sasl_auxprop_plug_init for plugin: sql