[Dovecot] Dovecot IDLE bandwidth usage

[Gerald Villemure]

Timo Sirainen wrote:

> TCP keepalives get sent so rarely that they don't keep NATed connections
> alive. (Linux's tcp(7) says the first one is sent after 2h of idling)


Its the same for windows systems, 2 hours.

All routers SHOULD keep the NAT connections open for at least that long.
But its not always the case,  a few years ago I had to get a FIX for an 
Alcatel Speedtouch Pro since its was originally programed to drop TCP 
connections after 15 minutes.

Gerald