Dovecot 2.3.17 can not start - too many parameters

Robert Nowotny rnowotny1966 at
Fri Oct 29 23:23:14 EEST 2021

it seems the rumors are right. After shortening the file
to one entry, it works.

Of course this is not a solution, so a fix will be needed.
I use the "/etc/ssl/certs/ca-certificates.crt"  which is included with
Ubuntu impish

yours sincerely


Am 29.10.2021 um 21:09 schrieb Michael Kliewe:


I have heard rumors that this happens when you provide a CA bundle file
which is big. If you just provide a single CA file it works. Something has
changed there, maybe the developers have more details about this change.

King regards

Am 29.10.2021 um 19:25 schrieb Robert Nowotny:

Dovecot 2.3.17 can not start - too many parameters. but the same config is
working on 2.3.16 (and for a long time already ...)

started via systemd unit file :
Description=Dovecot IMAP/POP3 email server
Documentation= dnsmasq.service
NetworkManager-wait-online.service dnsmasq.service
ExecStart=/usr/local/sbin/dovecot -c /etc/dovecot/dovecot.conf
ExecReload=/usr/local/bin/doveadm reload
ExecStop=/usr/local/bin/doveadm stop

Oct 29 18:48:58 lxc-imap dovecot[1781]: doveconf: Fatal:
execvp(/usr/local/sbin/dovecot) failed: Argument list too long
Oct 29 18:48:58 lxc-imap systemd[1]: dovecot.service: Control process
exited, code=exited, status=89/n/a
Oct 29 18:48:58 lxc-imap systemd[1]: dovecot.service: Failed with result

but when I run doveconf -n, it is working under 2.3.17
I needed to revert to version 2.3.16 to send this email ;-)

running on Ubuntu impish

yours sincerely

Robert Nowotny
Rotek GmbH
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