Dear Maintainer,

I've configured a pop-account, the polling of which I need to turn on/off on a day by day
basis (depending on where I am). For this I change the 2 fields in the Server Settings dialog:
    Check for new messages every ... minutes
    Automatically download new messages

The problem is: After I've enabled polling, icedove does not fetch mails
unless I restart it.

I observed this behaviour before in an older version of thunderbird, so
it may be an upstream issue.