Hi I am using latest stable ispconfig3 and installed using perfect server setup (debian stretch) So far i am very happy!. [ APS & Let's Encrypt Additions are very nice!) (and so is this forum ] I need to re-create all DNS zones as i have to push some common change. Not sure of the best way , I modified the "Default" DNS template and saved using the ispconfig3 gui. Visited Tools -> Sync Tools -> Checked DNS and Submitted. i could see that there server.sh correctly processed it and created new files as /etc/bind/pri.* however these files old domains ( prior to template mod ) do not bear the changes that were done in template. If i create new domains i can see that changes done in the templates are picked up. So my question is is there any way to modify the zonefiles en masse . Thanks & Regards. Rajesh Kumar Mallah.