[Dovecot] Upgrading a live running dovecot - how?

[Daniel Watts]

Hi Guys,

This has bitten us twice now. We're running Gentoo and emerge (ie 
compile) a new version of Dovecot thinking we can finish that then 
restart Dovecot in our own time.

It seems that Dovecot immediately starts to use the newly compiled 
Dovecot binary and we get version mismatch errors preventing access.

Would be good if Dovecot behaved in such a way that it kept on using the 
old version (held in memory) until it was restarted where it then loaded 
the new version.

Dan