Send And Receive Mail

Ubuntu 7.04 server amd64 (Host OS)
VMWare Server
Postfix 2.3.8-2

1)
On testing sendmail to Internet encounting following problem;

$ telnet localhost 25
Code:
Trying 127.0.0.1...
Connected to localhost.localdomain.
Escape character is '^]'.
ehlo xyg.com
It hung here after hitting [Enter]

$ netstat -l | grep tcp
Code:
tcp 0 0 *:vmware-authd *:* LISTEN
tcp 0 0 localhost.localdo:mysql *:* LISTEN
tcp 0 0 *:8333 *:* LISTEN
tcp 0 0 *:www *:* LISTEN
tcp 0 0 192.168.213.1:domain *:* LISTEN
tcp 0 0 172.16.77.1:domain *:* LISTEN
tcp 0 0 *:ftp *:* LISTEN
tcp 0 0 192.168.0.10:domain *:* LISTEN
tcp 0 0 localhost.locald:domain *:* LISTEN
tcp 0 0 192.168.0.10:ssh *:* LISTEN
tcp 0 0 localhost.localdoma:ipp *:* LISTEN
tcp 0 0 *:smtp *:* LISTEN
tcp 0 0 localhost.localdoma:953 *:* LISTEN
tcp 0 0 *:https *:* LISTEN
tcp 0 0 *:8222 *:* LISTEN
tcp6 0 0 *:imaps *:* LISTEN
tcp6 0 0 *:pop3s *:* LISTEN
tcp6 0 0 *:pop3 *:* LISTEN
tcp6 0 0 *:imap2 *:* LISTEN
tcp6 0 0 *:domain *:* LISTEN
tcp6 0 0 *:smtp *:* LISTEN
tcp6 0 0 ip6-localhost:953 *:* LISTEN
Sending mails on Intranet/locally on the same PC without problem.


2)
All mails sent on yahoo.com/gmail.com to this server returned saying users NOT found. However the respective users including Maildir have been created. Mails sent to them on Intranet w/o problem.