On 14.8.2012, at 11.04, Ed W wrote: > - Then there is tcp keepalive. Does Dovecot enable these? (Sorry, I should > look in the code...).
Yes. > However, applications which enable it (eg optional in SSH) will trigger a > default (I think) 75 second network packet It's something like 2 hours by default in Linux. > As Timo says, Dovecot tries to be clever and coalesce packets from checking > multiple folders, but from memory there are limitations on this if you have > multiple *accounts*? I think the hash is per email address and per IP ? Yes, doesn't help with multiple accounts, because the hashed username is different (no IP). I guess this could be changed to be per IP just as well. I think I wondered about which one to use previously but didn't see any point in choosing IP over username, but yes, multiple accounts could be a reason, especially after the whole world is using only Dovecot. :) > But of course if your emails turn up every few seconds, then you will be > triggering wakeups every few seconds also. Maybe Dovecot could make this somehow smarter some day.. Or create a plugin that allows that.
