Re: [Dovecot] Maximum number of connections from user+IP exceeded

[Ben]

IDLE is not required for this.  Polling, which is the default on all
MUAs,

Not entirely sure I'd call it "the default", Thunderbird seems to setup 
for IDLE as default these days, and I suspect Apple Mail and any of the 
other popular ones do too.

The source code probably looks something like
if (canIdle) then
        {do stuff}
else
        {do polling}