Am 16.12.2018 um 23:30 schrieb Daniel Miller via dovecot:
Don't know if this was corrected in 2.3.4 (haven't upgraded yet but
didn't see it in the notes) - but in 2.3.3 I see this in my log:
imap-login: Error: Diffie-Hellman key exchange requested, but no DH
parameters provided. Set ssh_dh=</path/to/dh.pem
So...either there's an undocumented feature of SSH-over-IMAP (that's
Dovecot - always on the cutting edge!) or someone had a coffee shortage
during a coding session...
# doveconf -n | egrep '(2.3|_dh)'
# 2.3.4 (0ecbaf23d): /etc/dovecot/dovecot.conf
ssl_dh = # hidden, use -P to show it
Alexander
