[Dovecot] dovecot died

[Marten Lehmann]

Hello,

> you may be able to band-aid things by running dovecot from xinetd and
> using the 'instances' [0] keyword.

no, never again! I'm stigmatised by xinetd. I once tried to run the 
qmail-pop3-service (which is very simple and not very 
ressourcen-intensive compared to dovecot-imap) with xinetd and even with 
setting all options to unlimited, xinetd wasn't able to handle all the 
connections. Although it should work at any CPU load and no matter how 
many users connecting, it simply didn't accept any more connections 
while just 80-90 users were connecting concurrently. So xinetd 
definetely isn't a choice. (Btw.: I switched to tcpserver from djb to 
run qmail-pop3d which worked perfectly. But tpcserver doesn't have a 
connections_per_user option).

I hope Timo will add this feature in the next time, it shouldn't be that 
hard to track the ip-addresses that connections come from and block them 
if limits are reached.

Regards
Marten