How do we disable LOGIN-REFERRALS? (part 2)

[sb]

On 12/3/15 1:32 PM, Timo Sirainen wrote:
> As long as Dovecot doesn't return any login-referrals (which it doesn't
> by default), I don't see why having LOGIN-REFERRALS in the CAPABILITY
> reply would matter.
Because a compatible client will use the capability as advertised by the 
server,
and then fail because the server is not honouring its promise.

One can hide the capability in the banner, but also wants to disable its 
engine.
You say that dovecot has it disabled by default, but I have no evidence 
of it, yet.