Comment 47 for bug 357864

The reason I needed the dummy POP server is for an interaction with the offline
synchronize feature. When you do an Alt-FLS, Mozilla will then decide to check
every mailbox for messages, regardless of whether or not you've told it to not
automatically check mail! When starting the offline sync, if any mailbox has an
error such as an unreachable server, Mozilla will error out and refuse to
continue the sync with other mailboxes. So, the simple method of entering a
nonexistent server name will not work in this case. This is unfortunate. I
will search for another bug with this issue and file a new bug if necessary.