telnet 87.106.xxx.xxx 25

Trying 87.106.xxx.xxx...
telnet: Unable to connect to remote host: Connection refused

sudo netstat -plntu

tcp   0   0 127.0.0.1:25    0.0.0.0:*     LISTEN      9518/sendmail: MTA:

Package sendmail is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

apt-get purge sendmail-bin sendmail-base opensmtpd

[root@wcmisdlin02 ~]# grep ^inet_interfaces /etc/postfix/main.cf
inet_interfaces = all
[root@wcmisdlin02 ~]#

# grep -E '^DAEMON_OPTIONS.*Addr' /etc/mail/sendmail.mc
DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
#