Stick with initial dovecot self-signed cert

This avoids possible letsencrypt initial install problems

src/freedombone-base-email

         exit 48
     fi
 
-    if [[ $ONION_ONLY == 'no' ]]; then
-        # obtain a cert for the default domain
-        if [[ "$(cert_exists ${DEFAULT_DOMAIN_NAME} pem)" == "0" ]]; then
-            echo $'Obtaining certificate for the main domain'
-            create_site_certificate ${DEFAULT_DOMAIN_NAME} 'yes'
-        fi
-    else
+    if [[ "$(cert_exists dovecot)" == "0" ]]; then
         ${PROJECT_NAME}-addcert -h dovecot --dhkey $DH_KEYLENGTH
         check_certificates dovecot
     fi
 
-    if [[ "$(cert_exists ${DEFAULT_DOMAIN_NAME} pem)" == "0" ]]; then
-        if [[ "$(cert_exists dovecot)" == "0" ]]; then
-            ${PROJECT_NAME}-addcert -h dovecot --dhkey $DH_KEYLENGTH
-            check_certificates dovecot
-        fi
-    fi
-
     chmod 600 /etc/shadow
     chmod 600 /etc/gshadow
     groupadd default
     fi
     sed -i 's|#ssl =.*|ssl = required|g' /etc/dovecot/conf.d/10-ssl.conf
     sed -i 's|ssl =.*|ssl = required|g' /etc/dovecot/conf.d/10-ssl.conf
-    if [[ $ONION_ONLY == 'no' ]]; then
-        if [[ "$(cert_exists ${DEFAULT_DOMAIN_NAME} pem)" == "1" ]]; then
-            sed -i "s|#ssl_cert =.*|ssl_cert = </etc/ssl/certs/${DEFAULT_DOMAIN_NAME}.pem|g" /etc/dovecot/conf.d/10-ssl.conf
-            sed -i "s|ssl_cert =.*|ssl_cert = </etc/ssl/certs/${DEFAULT_DOMAIN_NAME}.pem|g" /etc/dovecot/conf.d/10-ssl.conf
-        else
-            sed -i "s|#ssl_cert =.*|ssl_cert = </etc/ssl/certs/${DEFAULT_DOMAIN_NAME}.crt|g" /etc/dovecot/conf.d/10-ssl.conf
-            sed -i "s|ssl_cert =.*|ssl_cert = </etc/ssl/certs/${DEFAULT_DOMAIN_NAME}.crt|g" /etc/dovecot/conf.d/10-ssl.conf
-        fi
-        sed -i "s|#ssl_key =.*|ssl_key = </etc/ssl/private/${DEFAULT_DOMAIN_NAME}.key|g" /etc/dovecot/conf.d/10-ssl.conf
-        sed -i "s|ssl_key =.*|ssl_key = </etc/ssl/private/${DEFAULT_DOMAIN_NAME}.key|g" /etc/dovecot/conf.d/10-ssl.conf
-    else
-        sed -i "s|#ssl_cert =.*|ssl_cert = </etc/ssl/certs/dovecot.crt|g" /etc/dovecot/conf.d/10-ssl.conf
-        sed -i "s|ssl_cert =.*|ssl_cert = </etc/ssl/certs/dovecot.crt|g" /etc/dovecot/conf.d/10-ssl.conf
-        sed -i "s|#ssl_key =.*|ssl_key = </etc/ssl/private/dovecot.key|g" /etc/dovecot/conf.d/10-ssl.conf
-        sed -i "s|ssl_key =.*|ssl_key = </etc/ssl/private/dovecot.key|g" /etc/dovecot/conf.d/10-ssl.conf
-    fi
-    if [[ "$(cert_exists ${DEFAULT_DOMAIN_NAME})" == "1" ]]; then
-        sed -i "s|#ssl_dh_parameters_length.*|ssl_dh_parameters_length = ${DH_KEYLENGTH}|g" /etc/dovecot/conf.d/10-ssl.conf
-    fi
+    sed -i "s|#ssl_cert =.*|ssl_cert = </etc/ssl/certs/dovecot.crt|g" /etc/dovecot/conf.d/10-ssl.conf
+    sed -i "s|ssl_cert =.*|ssl_cert = </etc/ssl/certs/dovecot.crt|g" /etc/dovecot/conf.d/10-ssl.conf
+    sed -i "s|#ssl_key =.*|ssl_key = </etc/ssl/private/dovecot.key|g" /etc/dovecot/conf.d/10-ssl.conf
+    sed -i "s|ssl_key =.*|ssl_key = </etc/ssl/private/dovecot.key|g" /etc/dovecot/conf.d/10-ssl.conf
+    sed -i "s|#ssl_dh_parameters_length.*|ssl_dh_parameters_length = ${DH_KEYLENGTH}|g" /etc/dovecot/conf.d/10-ssl.conf
     sed -i 's/#ssl_prefer_server_ciphers.*/ssl_prefer_server_ciphers = yes/g' /etc/dovecot/conf.d/10-ssl.conf
     sed -i "s|#ssl_protocols =.*|ssl_protocols = '$SSL_PROTOCOLS'|g" /etc/dovecot/conf.d/10-ssl.conf
     sed -i "s|ssl_protocols =.*|ssl_protocols = '$SSL_PROTOCOLS'|g" /etc/dovecot/conf.d/10-ssl.conf