Hi, Thanks for the response. This problem is common for all my mail accounts in the server. So how to add that username@xxxxxxxxxxxxxxxx in e mail address lists of user accounts. Can u guide me . As for nslookup test it works fine.. When I set the type to MX and check with server1, and test.com it points properly to server1.test.com However still the mails to useraccount@xxxxxxxxxxxxxxxx bounce back saying host is unknown. > I'm taking a stab here as I don't know the full problem, but I would = > suggest verifying that the user you are e-mailing has = > username@xxxxxxxxxxxxxxxx in their e-mail address list as well as = > username@xxxxxxxxx > > Also, verify the MX record is working. From the Exchange server, run a = > few DNS utilities (primarily (probably only) NSLOOKUP). Verify the MX = > record is pointing to SERVER1 for TEST.COM. and for SERVER1.TEST.COM. = > and you should be good (if that is working). > > I believe Exchange 5.5 allows all incoming domains by default, if not, = > change this in the configuration. With Exchange 2000, you need to add a = > list of domains you want to accept. > > -----Original Message----- > From: Indra Chandrakalum [mailto:chandrakalum@xxxxxxxxx] > Sent: Tuesday, April 16, 2002 6:50 AM > To: [ExchangeList] > Subject: [exchangelist] DNS MX record problem > > > http://www.MSExchange.org/ > > > Hi, > I am struggling with converting my unix mail server to Exchange server = > 5.5 > on a Windows 2000 Advance Server machine. For convenience let us say my > domain is test.com .My unix server had been configured to receive > following both mail addresses to the same reciepient account. > reciepient@xxxxxxxx > reciepient@xxxxxxxxxxxxxxxx > Here server1 is the name of the machine. > When configuring Win2k server I gave same server1 name to new machine to > avoid any conflict. > Now with Exchange 5.5 any mail addressed to reciepient@xxxxxxxx receive > properly. > However when sending a mail addressing reciepient@xxxxxxxxxxxxxxxx = > mail > is rejecting saying Host is unknown. > I guess problem is with DNS MX record entry. Below mentioned is the > relevant entries I have used. > @ MX 10 server1.test.com > server1 MX 15 server1.test.com > server1 A 192.168.0.1 > @ A 192.168.0.1 > > Appreciate if anybody give me a clue or guideline to get through this.. > Thanks in Advance, > Chandrakalum > > > ------------------------------------------------------ > You are currently subscribed to this MSExchange.org Discussion List as: = > blockhart@xxxxxxxxxxxxxxxxx > To unsubscribe send a blank email to = > $subst('Email.Unsub')