occasionally overwrites the values in your location document with the value
from your person document (especially the "Internet Address" field). This is a
new R5 feature called Dynamic Client Configuration.
While is can often be useful, you may want a way to disable it. Here's how to
Open the location document in question in Edit Mode and select Actions ->
Advanced -> Set Update Flag. You'll get a dialog box which asks "Allow
administrators to keep this locations settings up to date with those settings
on your mail server."
Choose 'No' and save the document. This sets AcceptUpdates=0, which prevents
dynamic config from modifying that location document.