Sync via ssh fails when ssl is active

[Johan]

I realize I forgot some information...

Im running Debian 11 on both servers and dovecot is installed using 
debian-packages, version 2.3.13 (89f716dc2)

/Johan Pålsson

Den 2022-01-20 kl. 16:32, skrev Johan:
> I have computers at two different locations and one computer running 
> dovecot at each place. I sync my emails between these two servers using 
> ssh and I haven't had any problems with this lately until I upgraded 
> dovecot recently.
> 
> I now get the following error at location "alfa" when trying to sync 
> with dovecot at location "delta"
> 
> Jan 20 16:13:09 doveadm: Error: doveconf: Fatal: Error in configuration 
> file /etc/dovecot/conf.d/10-ssl.conf line 16: ssl_cert: Can't open file 
> /etc/letsencrypt/live/delta.oxyl.net/fullchain.pem: Permission denied
> 
> Jan 20 16:13:09 dsync-local(johan at oxyl.net)<FWBVNQN86WH52iQA1AGq6A>: 
> Error: read(vmail at 192.168.119.12) failed: EOF (version not received)
> 
> Jan 20 16:13:09 dsync-local(johan at oxyl.net)<FWBVNQN86WH52iQA1AGq6A>: 
> Error: Remote command returned error 89: ssh -q -p 22 -o 
> StrictHostKeyChecking=no -i /datastorage/epost/vmail/.ssh/id_ecdsa 
> -lvmail 192.168.119.12 doveadm dsync-server -ujohan at oxyl.net
> 
> 
> Trying to sync from "delta" i get the same error but the domain is 
> changed in the error-message to 'alfa.oxyl.net'
> 
> I can read mail at both locations using STARTTLS. There is no error in 
> dovecot.log when I restart the service. If I disable ssl and comment out 
> ssl_cert/ssl_key in 10-ssl.conf I have no trouble performing sync 
> between servers.
> 
> If I run the ssh-command in the error-message as user vmail I get the 
> same ssl-error as above.
> 
> Any ideas how to solve this?
> 
> /Johan Pålsson
>