Please keep a 2.2x version in amd64. 2.3 has a severe notification bug, even in 2.3.6 Portage still has a 2.2.36.3, but only ~amd64, and no other 2.2.x is stable.
erm. We got a problem. When compiled with glibc>=2.28, one of dovecot binary ('auth') will segfault. https://dovecot.org/list/dovecot/2018-August/112580.html There's a (oneliner) fix, commited to dovecot>=2.3, and not (yet?) backported to 2.2 : https://dovecot.org/list/dovecot/2018-August/112584.html I've patched locally my 2.2.36.3, and it fixes the crash. Could we add this patch ?
Unable to check for sanity: > no match for package: net-mail/dovecot-2.2.36.3
Please file a bug for the notification problem if it still applies.