Hello, We have two CentOS7.5 servers running in master-master mode. Mariadb, dovecot Mail and unison /var/www is all synching. However the /etc/nginx/sites-available and certbot letencrypt files are not updating on the mirror, primary server is updating correctly. I have both server running /var/log/ispconfig/ispconfig.log files in full debug mode. The slave is running under Azure so has a local private IP and a public IP address. Possibly this is an area that could be causing an issue. Initial ISPConfig had the private IP address loaded however I change that to the public IP address "Server IP Address". Just trying to diagnose why the directives and certs are not being updated on the slave and not sure what should be seen in the slaves ispconfig.log file. If I run the Tools->Rsync->Web sites I can see the primary server running through checking certs etc. On the secondary server I can see it running through and get lines like. 11.06.2018-20:47 - DEBUG - Processed datalog_id 4018 11.06.2018-20:47 - DEBUG - Replicated from master: REPLACE INTO `web_domain`... If check the /etc/nginx/sites-enabled directory the files have not been updated ?