I got forcibly renewed my certs.
dovecot -nP:
# 2.3.7.2 (3c910f64b): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.7.2 () # OS: Linux 5.9.0-rc5-lja-tv+ x86_64 Ubuntu 20.04.2 LTS # Hostname: superman.sillywalk.org auth_debug = yes auth_debug_passwords = yes auth_mechanisms = plain login auth_username_format = %Ln auth_verbose = yes auth_verbose_passwords = plain debug_log_path = /var/log/dovecot-debug.log info_log_path = /var/log/dovecot-info.log log_path = /var/log/dovecot.log mail_debug = yes mail_location = maildir:~/Maildir/ mbox_write_locks = fcntl namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } protocols = imap pop3 lmtp service auth { unix_listener /var/spool/postfix/private/auth { group = mail mode = 0660 user = postfix } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = mail mode = 0660 user = postfix } } ssl_cert = </etc/letsencrypt/live/lja.fi/fullchain.pem ssl_dh = </usr/share/dovecot/dh.pem ssl_key = </etc/letsencrypt/live/lja.fi/privkey.pem userdb { args = username_format=%Ln driver = passwd } protocol lmtp { postmaster_address = postmaster@localhost } protocol imap { imap_metadata = yes } local_name domainA.fi { ssl_cert = </etc/letsencrypt/live/informaatiotiili.fi/fullchain.pem ssl_dh = </usr/share/dovecot/dh.pem ssl_key = </etc/letsencrypt/live/informaatiotiili.fi/privkey.pem } local_name informationbrick.com { ssl_cert = </etc/letsencrypt/live/informationbrick.com/fullchain.pem ssl_dh = </usr/share/dovecot/dh.pem ssl_key = </etc/letsencrypt/live/informationbrick.com/privkey.pem } local_name paxsudos.fi { ssl_cert = </etc/letsencrypt/live/paxsudos.fi/fullchain.pem ssl_dh = </usr/share/dovecot/dh.pem ssl_key = </etc/letsencrypt/live/paxsudos.fi/privkey.pem }
local_name paxsudos.com { ssl_cert = </etc/letsencrypt/live/paxsudos.com/fullchain.pem ssl_dh = </usr/share/dovecot/dh.pem ssl_key = </etc/letsencrypt/live/paxsudos.com/privkey.pem }
local_name lja.fi { ssl_cert = </etc/letsencrypt/live/lja.fi/fullchain.pem ssl_dh = </usr/share/dovecot/dh.pem ssl_key = </etc/letsencrypt/live/lja.fi/privkey.pem }
The certs are working fine and are up to date. (Apache2 with same certs for domains works ok)
I not know howto use openssl x509 -text command, if i run it like
echo "" | openssl x509 -text
I get loads of errors.
My distro:
Distributor ID: Ubuntu Description: Ubuntu 20.04.2 LTS Release: 20.04 Codename: focal
Aki Tuomi kirjoitti 13.4.2021 klo 7:40:
Uh. You are practically proposing that all versions after 2.3.7.2 would be serving expired SSL certs, due to some bug? It that was the case, then I would believe we would've been inundated with bug reports for the past year or so. Installation probably breaks because you are using expired cert, from wrong path.
Doublecheck output of
doveconf -nPandopenssl x509 -textto make sure you are indeed using correct, non-expired certificate.Aki
On 13/04/2021 07:16 gmail <ljakku77@gmail.com> wrote:
Hi,
I got news: dovecot is the one that is broken, i got setup all other stuff updated to latest BUT not dovecot, and i got working system.
if I upgrade dovecot, the installation breaks. I'm using letencrypt's certs.
The version that is good is 2.3.7.2 (3c910f64b)
Heiko Schlittermann kirjoitti 12.4.2021 klo 23:20:
Hi,
In our case this is an internally used Dovecot Mail server that's used for … certificates worth the expense? Just curious on what everyone's opinion is of Digital Certs signed by certificate authorities that are only used inside the LAN. Thoughts? Aki is right. On the long run it's easier to use "offcial" certs. Since the advent of Let's encrypt it is cheap.
Of course, getting a certificate from Let's Encrypt for an internal service isn't as easy as for a public HTTP server, but it is possible.
(We use a dedicated machine, requesting certs for all our internal services, employing the DNS challenge with Let's Encrypt. From this dedicated machine then we deploy the certs into our internal infrastructure using https://gitea.schlittermann.de/heiko/cert-proxy.git)
I also tried creating new .crt and key files using this tutorial: https://msol.io/blog/tech/create-a-self-signed-ssl-certificate-with-openssl/ No need to use tech blogs. Use "man req" and brain.
openssl req -x509 -new \ -out ssl.pem \ -keyout ssl.pem -newkey rsa:4096 -nodes \ -subj /CN=example.com -days 365 (or two distinct files for crt and key).