Hi, Apologies if this has been covered but I tried searching first. I found several similar threads but nothing for this particular circumstance. My set up is as follows: host MASTER1 is ISPConfig master server host SYSTEMS1 is ISPConfig slave server currently MASTER1 runs email I now have a need to get all mail off MASTER1 and onto SYSTEMS1. This means: mail domains, forwards, mailboxes (containing emails), etc. Is there a feature for this? Or if not, what is the process I need to follow? Note that these servers and mail domains are currently in production so I need to: try to minimise downtime as much as possible be pretty certain of the process so I don't make any mistakes. Many thanks for your help. Cheers Geoff.