Hello, I have the following problem with DNS Manager: 1) In my main domain, I cannot change the priority of the MX server. It is set to 50 and I want to set it to 10. The error message says that "this or a similar record already exists". 2) If I delete the MX record with priority 50, I cannot set it back unless I choose a new priority (i.e. 60) and this only if I have never used the same priority for this record again in the past (even if I have already deleted it). 3) I cannot add a second MX record if I have already used this record in the past. Only irrelevant (never used) records can be added. Of course my Recycle bin is empty before trying to do any modifications. Can somebody please have a look at this on a non-production server as I am unable to provide more testing on this? (my only ISPConfig server is a production one and I was trying for more that an hour to fix a broken setup here). I will try it again after some time and post the results. Thank you, P.S. Using the latest stable (2.2.18).