telnet server 25 connection refuse

[Barry Brimer]

> We have RHEL 5 version,after configure sendmail.mc ,dovecote configure
> file, and dovecote enable,iptables -F,selinux is off.
>
> and
> telnet server 110 , working fine ,
> but
>
> telnet server 25 connection refuse,

By default, SMTP servers on RHEL systems only listen to localhost, not the 
network interface.  Chances are you need to put "dnl " in front of the 
line "DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl" in your 
/etc/mail/sendmail.mc ...
run m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf 
and restart sendmail

Before you do this, try :

telnet localhost 25

If that answers, then the above fix should work.

Barry