Ditto. Another thing that is happening on our larger SM installation is that each upgrade of v16 is wiping out the hostname setting for each domain. This has happened across 2 production and 1 test servers repeatedly.
Suddenly email fails to deliver because the update has wiped the hostname from each domain record... My admins are getting pretty tired of having to go through all the domains and reset this after every single upgrade.
Matthew J. Sine, General Manager8Dweb LLC"Making the Web a Happy Place"