I thought I posted this earlier, but it's not showing so will post my final solution again:
The culprit was name resolution. I modified my hosts file to state my server's exact LAN ip address:
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127.0.0.1 localhost
10.0.0.18 scalix_server.domain.com scalix_server_alias.domain.com
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Thanks to Matthew and Sascha for helping me through this.
TMK