Hello - I am trying to install/configure Dovecot and Postfix on my server running OpenSuSE Leap 42.3 x64 and am running into a perplexing permissions issue that I need help with to resolve.

Dovecot is configured to use a certificate file as shown here -

bigbang:/etc/dovecot # cat dovecot.conf
listen = *,[::]
protocols = imap pop3
auth_mechanisms = plain login
disable_plaintext_auth = no
log_timestamp = "%Y-%m-%d %H:%M:%S "
mail_privileged_group = vmail
ssl_cert = </etc/postfix/smtpd.cert
ssl_key = </etc/postfix/smtpd.key
ssl_protocols = !SSLv2 !SSLv3
passdb {
  args = /etc/dovecot/dovecot-sql.conf
  driver = sql

and when I start up the dovecot daemon I am getting the following error message -

"doveconf: Fatal: Error in configuration file /etc/dovecot/dovecot.conf  line 7: ssl_cert: /etc/postfix/smtpd.cert Can not open file: Permission  denied"
There was nothing unusual done in creating the certificates and no password requirement was set to use it. It was simply generated locally on my server, not supplied from a certificate authority.

Looking at directory and file permissions does not show anything either -

ls -ald /etc/postfix
drwxr-xr-x 5 root root 4096 Jun 16 16:19 /etc/postfix

 ls -al /etc/postfix/smtpd.cert
-rw-r--r-- 1 root root 1424 Jun 16 16:04 /etc/postfix/smtpd.cert

Any ideas on how to debug this and track down what is the real issue? Thanks in advance, Marc...