I am trying to change value of showinaddressbook attribute using adsiedit.msc but after few minutes the value I had removed is reappearing again. Actually we planned in our organization no external contact should view in Default Global Address List but should view in All contacts, I found the option in ADSIEDIT.MSC by removing the DN value of Global Address List but after remove the value its getting revert the same value reappears,when I close and restart ADSIEDIT.MSC.
Request for expertise advice on this to tackle the issue.
Environment:-
Domain Controller - Windows Server 2K3 R2 Ent Edition holds FSMO
Exchange - 2003 SP2 & 2010 SP3