[zic_t]

inetd.conf
#smtp stream tcp nowait root /usr/libexec/sendmail/sendmail sendmail

telnet ns.server.ua 25
trying 192.168.0.5…
telnet: connect to address 192.168.0.5 connection refused
telnet: unable to connect to remote host

telnet localhost 25 работает

netstat -a
Active Internet connections (including servers)
Proto Recv-Q Send-Q Local Address Foreign Address (state)
tcp4 0 0 *.pop3 *.* LISTEN
tcp4 0 0 *.telnet *.* LISTEN
tcp4 0 0 *.ftp *.* LISTEN
tcp4 0 0 *.netbios-ssn *.* LISTEN
tcp4 0 0 localhost.smtp *.* LISTEN
tcp4 0 0 localhost.domain *.* LISTEN
tcp4 0 0 ns.domain *.* LISTEN
udp4 0 0 ns.netbios-dgm *.*
udp4 0 0 ns.netbios-ns *.*
udp4 0 0 *.netbios-dgm *.*
udp4 0 0 *.netbios-ns *.*
udp4 0 0 *.49152 *.*
udp4 0 0 localhost.domain *.*
udp4 0 0 ns.domain *.*
udp4 0 0 *.syslog *.*
udp6 0 0 *.syslog *.*
Active UNIX domain sockets
Address Type Recv-Q Send-Q Inode Conn Refs Nextref Addr
c1ab4dac stream 0 0 c1ab730c 0 0 0 /var/run/ndc
c1ab49d8 dgram 0 0 0 c1ab5000 0 c1ab4c94
c1ab4c94 dgram 0 0 0 c1ab5000 0 c1ab4d20
c1ab4d20 dgram 0 0 0 c1ab5000 0 c1ab4ec4
c1ab4ec4 dgram 0 0 0 c1ab5000 0 0
c1ab5000 dgram 0 0 c1ab3104 0 c1ab49d8 0 /var/run/log