Hi, Need some expert advise. We are two sites using two different dns name space in a Ex2k/5.5 mixed environment. We are a campus environment, with one Exchange Org and two sites but the two sites on different domain, domain1.edu.sg and domain2.edu.sg. Microsoft is pushing .Net into this part of the world and is approaching my counterpart (the other site) to migrate. Question: Any impact if my counterpart go for .Net and Titanium while my site stay at Ex2k and AD? This is quite new here just wonder in States and Europe anyone has start this migration. If so any experience to share. thanks, much appreciated, in this line everyday you are seeing something new.... Ong LB Exchange Admin National Institute of Education Singapore This communication (including any attachment) is meant only for the recipient(s) named above and may contain confidential or legally privileged information. If you are not an intended recipient, this communication has been sent to you in error and you must delete all copies of this communication from your computer system and notify the sender immediately by reply email. Unauthorised use, disclosure, dissemination, distribution, retention, copying or reliance on this communication is prohibited and may attract civil and/or criminal penalties. Thank you.