Have you tried to telnet from your server to other servers such as: telnet mx3.mail.yahoo.com 25 How is the server configured for DNS? John Tolmachoff Engineer/Consultant/Owner eServices For You > -----Original Message----- > From: Musser, Dale [mailto:musser@xxxxxxxxxxxxxx] > Sent: Friday, September 24, 2004 11:44 AM > To: [ExchangeList] > Subject: [exchangelist] Understanding about dns and exchange > > http://www.MSExchange.org/ > > OK > I must be new at this because I am lost. > I have no idea where to go next. > This is my problem. > We have a new exchange 2003 server installed and I am having the same > problem with multiple people. > Some emails come back as failures because the virtual SMTP server can > not confirm the dns examples : yahoo and aol. > I liked the days when we just sent all emails from our company to our > internet providers smtp and let figure this all out but instead we send > directly. > I can look at the queues and see failures like yahoo.com and 3 emails > trying to get out but no good. > There must be something I am missing here, I have been reading books and > doing searches on the internet and nothing. > > Help!! > > > Dale > > ------------------------------------------------------ > List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist > Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp > Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ > ------------------------------------------------------ > Other Internet Software Marketing Sites: > World of Windows Networking: http://www.windowsnetworking.com > Leading Network Software Directory: http://www.serverfiles.com > No.1 ISA Server Resource Site: http://www.isaserver.org > Windows Security Resource Site: http://www.windowsecurity.com/ > Network Security Library: http://www.secinf.net/ > Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com > ------------------------------------------------------ > You are currently subscribed to this MSEXchange.org Discussion List as: > johnlist@xxxxxxxxxxxxxxxxxxx > To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist > Report abuse to listadmin@xxxxxxxxxxxxxx